I am feeling sad. Has this happened to anyone else?

I downloaded this app called Hily, i match with this guy, we stared talking, the conversation is going really well, and he’s very handsome. He tells me he’s from New Jersey, and that’s he’s here in Arizona for vacation, he goes back home Sunday (today) Saturday we had sex, prior to sex, I had asked him if he had a girlfriend or wife, he told me he was single. The conversation was also nice in person. We had sex twice. He added me on snap chat. Well I told him to. I could tell he was hesitant to add me. When he left he gave me a hug. I messaged him on snap chat to drive safe. He left me on delivered for hours, eventually I noticed that he blocked me on snap, and his profile completely disappeared from the app. I am not sure if he unmatch with me or just download the app for a hook up since he’s on vacation, a part of me wants to text him and asked him what’s going on. I have his number as well. But I don’t want to look desperate. Do you guys maybe think he has a girlfriend? He said he was on vacation with his childhood best friends I believe he said two brothers. I am 22 and he’s 23.