thanks Purplelily! Actually I have been very independent

all my life. I come to the States by myself, go to graduate school, work part-time, moving around cities, and now work is finally settled (not as busy as before), and then all my friends around getting married. so I am start worrying about myself being single forever. I have been single since I came to the States. He is my most serious date so far. I told him and he knew that,too. Earlier when we date, I told him that he and I are not the same level to both feelings and physical relationship, he better keep us as friends. But he said he really likes me and he want something different. so that's how things came. I was actually very happy for a while until I found out he did not want to commit.