I think I'm losing attraction towards my boyfriend?

- Hello, me (19) and my boyfriend (20) have been dating for a year plus now since April/May 2019, although I knew him for around 2 years before we started to date. Things was going well and we had a normal relationship.
- We had a somewhat average sexual life, we're both each other's first time, and I've never really realize it until I think about it, most of the time it was me pleasing him and I never really was satisfied. Most of the time I felt like I just go along with his sexual advances to keep him happy (?)
- However, I feel like recently this year I don't feel sexually attracted towards him anymore (?) I'm not sure if it's because I'm feeling a little depressed recently, if it's because I don't find him sexually attracting anymore or if I'm actually losing feelings for him.
- He realizes this and also talked to me about it, admitting that he was kind of pressuring me and being sulky when I'm not up to make out/have sex with him. We kind of talked it out and I told him it's alright after he apologizes. But honestly I don't really know what to do. I can see that he clearly is trying, he's sincere towards me and we're both growing and still maturing. But when I still think about being sexual with him it's kind of dreading and it makes me feel uncomfortable (?)
- I don't know what I can do and I have nobody to talk to about this hence the reason why I'm posting this here. I did think of breaking up with him but at the same time I feel like it's not right and I do want to be with him for a long time. But at the same time I would still have to face him when we meet again. So I'm kind of lost. Is there any ideas of what I can do?

(TL;DR: Me losing attraction for boyfriend and I don't know what I should do)
I think I'm losing attraction towards my boyfriend?
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