What do you reckon i should do?

Okay theres this girl that ive been talking to for about a year now and since then we've been through some **** lets call her Jess, first of all ill admit i was a prick to start off because when i first started talking to Jess we got fairly close then i met her friend, lets call her Beth and started to talk to her alot and eventually got with Beth and didnt talk to Jess for a while and eventtually stopped talking altogether, then after getting to really know Beth i started to dislike her alot and i finished with her. I then started talking to Jess again and after a little while she told me that she liked me again so thiis time i stuck with her and me and Jess began to meet up out of school and i met her a couple of times and we both really liked eachother but we were both really shy around eachother so nothing happend :/ so then we decided to cut the relationship off and stopped talking once again. Now me and her are talking once again and ill admit i really like Jess and we have alot in common and ive been with other girls since me and Jess stopped talking but it just didnt feel as good as the times i spent with Jess, i would really like to have another shot at trying to get with Jess but im not sure if thats the right things to do or if she'll be willing to try again. Please Help out, thanks :)