I think my boyfriend is masturbating too much

This might be long. Please bear with me. I need advice. Im not sure how to approach this subject with him, I think I've found a way, here's a little backstory first: When me and my boyfriend have sex it isn't passionate, it's just sex. This is because he doesn't like making out and he won't do foreplay. I've talked to him about giving me foreplay and he just won't do it. He usually cums pretty quickly. After about 5 minutes sometimes if I'm lucky 10. This may seem like a lot but he doesn't give me foreplay (but asks me to suck his dick) and then gets mad when I'm not satisfied. I can always tell when his "load" is smaller than usual and lately it hasn't been a lot at all, even if we don't have sex for a day or two. (In the beginning of our relationship, I told him I wasn't ok with porn, and he admitted it's really hard for him not to watch it and he thinks about watching it and he tries to keep himself occupied otherwise he'll watch it). Now recently: he's been getting softer during sex if it's not hard/rough but sometimes I pretend not to notice. Then one time, he completely got soft and had me suck his dick, barely got hard then went soft again. I cried because he doesn't make me feel like he's attracted to me. I think it's because he masturbates/watches porn so much that he has a harder time staying hard during sex. Because I can always tell when he isn't fully erect. We've had talks about it so I'm afraid it'll lower his confidence and he'll get tired of me bringing it up. But, I was thinking about telling him that he should start wearing a condom so that he can cum inside me so that he doesn't have to pull out. Then I can say, that I think he masturbates too much and that's why we've been having problems and maybe that if he got used to cumming inside me he wouldn't be so eager to masturbate and then he can stop doing it so much. I think him pulling out and jerkin himself off to finish isn't good because it just wires his brain to think about masturbating?

•let me just say I have 0 problems with masturbating now and then. Sometimes I do it multiple times a day. But him getting soft and not lasting is affecting our relationship. Am I being crazy or out of line? Should I not bring it up tonight?