16, clinically depressed, need help?

my boyfriend broke up with me two and a half weeks ago. I was already severely depressed and that made my depression hit its peak, causing me to overdose on Paxil and be sent to the ER. I was then sent to a psych hospital, where I stayed for nearly two weeks. that helped a little and once I was out, I was sent to php. now that I'm in php, I am starting to feel like I want to go back. I keep having strong urges to hurt myself and don't feel comfortable at home. However, there's another reason I want to go back. I met someone and while I don't want to date him, I want to hook up with him. he and I flirted during my time there and he, even though he is out of my league, wants to hook up with me. I think that having sex with him will make me feel better and be a good experience for me. he won't be out for another week or so, so I have to wait. I did send him nudes on snapchat though, as something for him to get back to. but the main reason I made this, is because I was wondering if it is a good idea for me to do this or not. it will be safe and we've already been tested before we came to the hospital. i do want to do this but some people are telling me I will regret it later. is that true? or does it just depend on the person? lmao help please. I just think having sex with someone that's not my ex is gREAT, especially someone that's hot as hell. so basically I have two questions, should I go back to inpatient and should I hook up with him?