Bf never wants to take pics

My boyfriend and I are dynamic is kinda akward, and we barely show any affection in public or around others. He tries too but idk, I feel like it’s so akward and hard to even try to kiss him when we’re alone it good just be me overthinking everything. Ultimately we never take pictures together and I feel weird asking to and we spend so much time together I just want something to look back on when I’m not with him. He says another time when I do ask but he’ll ask to take a picture of his thing in my mouth so I feel like I’m not actually his gf just something to mess around with