Hi, I am currently doing my PhD and have started dating as well. I am currently not in any commited relationship but am in touch with two guys. One who is in the States and I had met him over eHarmony but we have clicked so well and will be meeting soon sometime in the next month, I believe. There is also another guy whom I am interested in and he lives and studies in his third year of PhD. We met through a mutual friend and talked for hours on end a year back but were seeing other people. Somehow I saw him around campus, acknowledged him, and then went off but he remembered me and got my contact info from our mutual friend. We went out on a date on Thursday and were really close and intimate (but didn't go all the way) and saw each other subsequently on Saturday night. Since then he has been busy but remembered that I had my presentation and asked about how they went and wanted to read my papers and we also flirted over the phone. I, at the last minute, decided to invite him to my party but because I was in the dilemma to invite him or not - he had plans but assured me that if it will be possible, he will make an effort to come and visit my home. I told him, it was cool and whatever he found convenient would work. He has only a month ago broken up from a relationship and still adjusting to his single life. While the first guy, our intentions and his words are very direct and clear - he says things as he means it and was even willing to fly me to see him next month if his finances are in order. I am not sure about this second one and he shows interest in me but I haven't seen him in the last two weeks and am sort of confused. The second guy told me he is taking things one-day-at-a-time and since I already asked him once, I cannot bug him to come and see me but then I feel confused!
Note: This is the first time in years the type of guys I am interacting with are both great and respect me a lot and I honestly have strong feelings for both of them at this point and am letting it happen. However, the second guy's sudden disappearance is bothering me and I am not sure what to make out of it. Should I just let it be with him and give him the space he needs?