Doubt

I am 19 and I have a roommate who is also 19. I am straight and I thought he was straight too. But after a few weeks living together, he started cooking for me, doing my laundry, cleaning the whole house, doing my homework and he always asks for permission to do anything around the house. We get along very well, so I directly told him that he looks like my housewife doing these things. He just said that he's straight and just like to keep the house clean, which can be true, but I find it very awkward that every week I bring a different girl to my room and he never has girls around. When I try to talk about fucking girls, he always avoids the topic, and I have a feeling that he's hiding something from me but also from himself.

My best friend since childhood is gay, he is like my brother and we tell everything to each other. He is extremely dominant, confident, and strong, and when I told him that my roommate was acting like this, he started talking about hierarchy and he told me that he was an Alpha. He said that some Men like him and you are naturally dominant and others are naturally submissive. He even said that he has never sucked a dick before because he likes to fuck and breed, which for me was crazy since I didn't know some gays don't like to suck dick.

Long story short, my best friend and brother thinks that it's not normal for a straight man to serve another straight man like this. He thinks I could get an easy blowjob or even fuck my roommate's hole eventually. I am straight and I have no doubt about my sexuality, although of course I respect the gays a lot. My brother thinks I should take advantage of this opportunity because it is just a matter of time until the roommate accepts his truth as a faggot. I have never thought about that, but I think it would be nice to have a warm mouth every morning.