moving on

hi ladies, i think i just need to hear from different ladies who have been through the same. but, how do you completely move on from someone? basically, i was seeing this guy for a little while, and somewhere in that i ended up losing my virginity to him. but he does not have an interest in me any longer. of course i am upset, but i know i need to get away from this person. im just not entirely sure how since im so used to this person and we have mutual friends / i dont know where to go or what to do to meet people? any advice on how to be around new people?