Do you think he has lost interest in me?

Okay so I've been going out with my boyfriend for just over a year and the last while I've felt like he is not interested in being with me, we went away for a short break last week and during sex he just randomly stopped and said "I need my phone" he didn't say why, He just lay there using his phone, doing what with it I don't know, I couldn't see it, then 2 nights ago we went to see Skyfall (brilliant movie by the way) and usually we are chatty before the film starts but not once did he talk to me and then yesterday I asked if he wanted to come over to my house later (as in last night) and he said "only if you want me to and that's all i'm saying on the matter" and i told him he didn't have to come up if he didn't want to but he just text back saying "be ready" and that was it, when he got here he didn't say hello when I opened the door he just walked straight in and sat down and didn't talk to me at all the whole time, and he just fell off to sleep, then when he was leaving he just walked out the door, I really don't think he is interested anymore.

He has been acting like he doesn't care if we spend time together or not, he makes no effort to make plans with me anymore and this morning I asked him what was wrong and he just said "I don't want to be near your house anymore"

Do you think the behavior runs deeper that somethings wrong or does it look like he isn't interested, I'm even at a point where I think he has met someone else

Any advice and help is greatly appreciated