Well, contrary to what people in the comments was thinking, that he was gonna try to steal her, i thought that he was an ex-bf (basically, someone who asked her to fuck and dropped her like everyone else), but im glad im he is a chilling over-friendly dude.
He is your typical "the MC is interesting, so im gonna stick with him" kind of character and i agree with part of what he said: some times in manga people waste too much time about "cherising his loved one" when they dont even know what their loved one wants. I mean, they arent asking for sex because they wanna respect her when the truth may be that she is frustrated because his partner isnt asking for it and even might feel down thinking she isnt enough attractive.
Not that this is the case, since she basically doesnt think much, but its still this "cherish" thing i something that happens a lot and i feel its wrong. You might fail, but if you dont try to take what you want when you can, you may regret it later.