So for context I'm 21 F boyfriend is 30 M, we've been dating kind of off and on for about a year now. We met on tinder. Things have been pretty good, we've had some issues with retroactive jealousy on his part, and we've been battling that for awhile. Lately it seems to have gotten alot better, instead of running in circles about something he wasn't even around for he's all of a sudden taken a new attitude about it. Which was relieving until this really odd thing happened. So he and I are pretty kinky, we like to explore our fetishes and kinks together. But I've always been the one to buy our sex toys, the most he's gotten is a new bottle of lube every now and then. Which was fine with me, but recently we've been getting a little further into it, I've started buying new things for us. And we briefly discussed him getting some kind of butt toy, but nothing else. This is where it didnt start adding up for me, We go a few days between seeing each other, and this last time before we saw each other again he had some late night guys night with his brother..which struck me as odd when he said it, because he doesn't go out with people on days he works especially out to drink. But its his brother so i move on, nothing to think more about. But then comes the night we're supposed to see each other again I come over to his house and we're having a great time, can't complain at all. We obviously get into being intimate together we go to his room and i notice..a black shirt from PINK...not mine. and a pair of striped socks also not mine but obviously belong/belonged to a woman..but it isnt the first time clothes have appeared out of his baskets from other woman so i dont think much of it. Besides that i just had gotten a new crop top from pink. We continue, we are into it and then he goes in the chest at the bottom of his bed..where he brings out brand new, pink restraints..that are already put together. A collar and another choker with a bell and bow on it..also pink. I hate pink. And he knows that. First red flag. I move on from it..we continue. Then at some point during the night I get up myself to pick some stuff from the chest and as soon as I open it..I see an open pair of black cat ears..a wrapped pair of white one and a black lace choker that just so happened to be right next to the black ears they were perfectly matched together. I then look up..and see an outfit..a pink outfit. It just so happens to match the stuff hes been buying "for us" I pick it up, this outfit is 2 sizes to big for me..I'm a very tiny woman..and this is meant for someone thicker..with bigger boobs. Not me. With a matching pair of pink gloves that are neatly folded underneath the outfit, So I turn to him and ask about it..he says that they've been sitting in the chest in a cardboard box and he "just dumped them in" after finding them. I've been through that chest 100x..never seen anything like what I did this night. I disclose that to him. And he immediately cuts me off with "don't take an accusatory tone" even though I was just trying to explain that this didn't add up. He says that he just found them and that they hold no meaning, so I ask him to throw away the outfit that obviously has no use for me..and he tells me "what happens if we break up" "You buy a new one??" I told him. "Its a waste though"...so you're just saving an outfit to have sex with other girls in after me??? Right. I move from the outfit to the open cat ears and choker, that just happen to be his favorite color and matched perfectly. He says that they were delivered like that..delivered with a wrapped pair..and a loose pair. Including the choker. At this point I'm baffled at the utter audacity of the lies he's telling me..and he can tell so what does he do..brings up his own issues with retroactive jealousy, particularly about the guy I was seeing before him. Pretty much told me I had no right to be upset because of the things that happened between me and that man. In the same sentence says "I just think it's stupid" that I felt any type of way about the fact that the random outfit that just appeared, and the gear he had been buying was the exact same color as the mystery outfit. Or about the choker and ears. He did so well at gaslighting me I truly thought It was just me until I went home and got to thinking about it. This stuff was obviously not meant for me..it was never in the chest before and if he had bought it before me..it would have been there the whole time. Because they were good quality things..no reason he would put them up where his kid could find them instead of in the box where they were able to be used and appreciated. I am almost 100% sure he's lying. But everytime I bring it up he's told me I'm overthinking it..or "diagnosing his reactions". He's so good at it I'm driving myself crazy trying to figure out if I'm just overthinking..or is there's really something weird going on. Because everything to me, the change in his attitude, telling me he'd be okay with staying friends if we broke up, the sudden increase in affection and wanting to "buy stuff for us" and explore our kicks more..it all feels like a cover up but I can't tell if I'm just overreacting anymore. So I'm here asking you guys...AITA??