Is he cheating or backing out?

Ok my boyfriend lives with me and we have been living together for 3 months and this Christmas he flew me to meet his family in Washington and I got a ring. We both are supposed to be moving there in Feb ( yeah coming soon) but any wayz he went home to help his dad out with his business and find us a house or an appt to live in. Which this is big nah huge because im leaving everything I’ve known to be with him. he has been home for a week now and we have barely talked on the phone at all. probably like a total of 10 min. everytime I call he doesnt answer and when I confront him about it he says he didnt hear his phone ring or says he is busy and will call back later but never does. but I check his myspace the next day and some girl ( a friend of his who is married) says had fun with you at the bar. but he cant answer his phone. see I have had this happen before but I ended catching an ex cheating on me. and I left him. I don’t know if he is cheating or just gettin tired of me but he comes home tomorrow. and I havnt talked to him at all today I didnt call because im tired of doing all the calling. what should I do?? how do I make him feel like shyt or like he f-ed up or just bad?? or am I over reacting???