I started seeing this guy but drugs&other issues?

I met this guy at University and he wanted to go on a date. he isnt the type of guy i usually go for but i am not judging people on looks so I went on a date. It went really well and we kissed on the first date. We met up, for dinner, in the day, in the park and spend so much time together. After around 5 days of dates We relaxed in his room and started to touch each other. I asked him when he last had sex and he said he never had it before..So i told him we shouldnt have sex because we havnt knw ech other long enough and i wasnt sure if he would want to loose it to me.. He said he wanted to lose his virginity for ages and said he really wants to do it with me. So we did.. So well we have met literally every day and 2 days ago he intriduced me to his mates as his girlfriend, eventhough he has never asked me out. He wants to see me all the time and doesnt understand when i need sum time for myself. I was planning to go out tonight with girlfriends, bt he just decided to take his mate along and join.. I do like him, but it all going waaay to quick. He also tries ti get me into drugs, when i told him im not a fan of that. he buys me presnets a lot and is sweet, but I am so exhausted always being around him all day.. Wht shld i do?? I also feel **** i slept with him, but then he really wanted to..?? any advice for me??