My ex (M) and I (F) have had a tumultuous relationship. We dated for about a year w a 3 months break in between. I loved him tremendously and would’ve laid my life on the line for him. Before dating me, he had an ex. He called her the “love his life” but she broke up w him and he said he went into depression for multiple months until he met me. He swore to me that they were just friends, but it became clear to me that he still has feelings for her. Whenever she called, he’d jump like a dog. He would text and message her when we were together. He’d babysit for her, whenever she was upset - he’d console her, whenever she needed her sink fixed, she called him. He would beg at the chance of spending time w her even though he called her selfish, mean, narcissistic, and not a good person. So I ended the relationship bc I didn’t feel like he prioritized me. It’d always be about ex gf, ex gf and got tired of it. We broke up for 3 months and he came back asking for another chance, saying that he ruptured all communications w his ex and so I agreed to give it a chance. Then the cycle began again, ex called, texted and he’d jump. He said he told her not to call but she keeps doing so I said block her and he said he didn’t like doing that. But he made it very clear it was one sided and that she kept reaching out to him not other way around. Couple weeks pass and I see in his IG that they’ve been sharing cute vids and photos (nothing explicit that I could tell). I confront him and he says I’m too jealous and that I shouldn’t worry bc he’s “with me”. Then the nail on the coffin was when he said he couldn’t hang w me bc he was helping a friend w her shower - I ask is that friend the ex? And he said maybe. That’s when I blew up and sent him a long text breaking up w him. I regret doing that bc I feel maybe I should’ve done it face to face bc at the end, I feel like the relationship deserves at least that much - I know I’d be livid if he did that to me. I feel such like an AH. I texted him and called him, he won’t pick up so I completely feel like the asshole right now. Do you think I should try to apologize for breaking up over text or should I just let go?