Search Results: getting over, cheating boyfriend

My boyfriend (of almost 2 years) left for Korea for the summer vacation. Before he left, he talked about marrying me and spending forever with me. After he left certain events took place that lead me to believe that maybe he is not as dedicated to me as I thought: 1. He pretty much stopped talking to me. He would tell me to wait by the computer for him to Skype me. I would wait for hours - then he would text me and say he was busy doing something with a friend 2. He never mentioned the names or genders of his friends. 3. He changed his profile picture so that I was no longer in it... 4. He began going to clubs with "friends" 5. He appeared in a photo with another girl and they were sitting next to one another, sharing food. 6. Out of the blue he blew up at me and accused me of cheating on him. (No context at all... just blew up) 7. After a long period of making appointments to talk and ditching me, he finally messaged me and said he wanted to take a break (a. k. a. wanted to be single for the rest of the summer) and would /think/ about getting back together with me when he returned from Korea... (also, he did this over Facebook... not even to my face over Skype...) He lost all interest in me... how I was doing, if I was alright, etc. Our conversations never lasted longer than 10 minutes. My instincts are screaming that I am being used and cheating on... What would you do if you were me?