So my boyfriend and I have been together for 16 months.. I think he's losing interest in me.. he doesn't ever engage in conversation with me how he used too. He's always on his phone or the laptop. This morning I walked into the kitchen and the screen door was was closed and the door was opened as his pants were down to his knees and he was trying to pull his pants up claiming the garbage truck his here like he was about to miss garbage day.. and then I looked outside and notice the niebors door closing.. the irony.. oh well sex used to be amazing... now it's like I'm trying my hardest for him not to lose his hard on. Sex lasts like 3 min now. So not worth sucking his dick for 15 min just so he can get a boner. I'm starting to lose Interest and I don't want to.. I just don't know what to do.. something tells me he's cheating but I don't have any actual proof. I just sense it.. when I told him I wanted to break up this morning. He didn't say anything until I left the room and then I heard him say "byyyyyeeee" in a sarcastic tone. What the hell do I do.