Love getting in the way of masturbation?

So, I've never been in love and I'm dating with this guy for 4 months. Everything is great, we haven't have sex yet but we make out pretty regularly and I'm a virgin. The only problem that I have is he can turn me on in an amazing way and I love every second of it however lately I feel like I can't masturbate as well as I used to. If I can think about him it works but sometimes I fail at picturing it and I can't masturbate. Basicly I can't turn myself on as much as he can turn me on 😅 and lastly my question is am I falling in love? Is that the reason I can't pleasure myself as much as I used to?

Ps: I know I love him it's just I feel like being in love is a bigger thing that I've never experienced