My(24F) partner(23M) won’t go down on me

What the caption says. The person I’m currently dating won’t give me head unless I shower before. I get wanting to be clean but I’m used to having partners wanna “taste my day”. Am I overthinking this? I already started this conversation and I’m not sure he understands. Overall if he continues to not understand am I overthinking this? All love <3 Context: I say partner bc this is the only person I’m dating. I’m not sure if I’m overthinking this.