Whats the best thing 2 do in my situation?

well. gf broke up with me about 1 1/2 months ago. she started seeing somone else and she kinda knows I know. she trying to hide it cause she dosent want to hurt me. I have seen a couple people too, but she still in my mind. I have done everything for this girl and we were together for 5 years w hardly any problems. I feel shes at the age where she just wants some freedom to see what its like. She was just ignoring me., but recently we have been texing alot. I know I cant change her mind she has 2 do it on her own. But what can I do in the mean time. I lied to her a couple days ago and said that I was ok with the situation. since then it seems shes been communicating a little more. She really lost and has been doing some things she was always against. any suggestions?