So me and my boyfriend had sex a lot in the past then it started to slow down. Now we hardly do it. But he has a very tiring job and sometimes gets home late and isn't in the mood which is totally understandable.  But when we do have sex lately he hasn't been into it as much as he usually is. He's not wanting to do foreplay he just wants to get on with it then he goes to bed. Could he just be out of it. Or has he lost interest. We haven't been on the best terms lately either.  Any advise on what I should do? We have also been together for over a year.