my ex

so me and my ex got back to talking and were keeping it on the low coz she doesn't want people to know and thats ok but we went to go see inme at sheffield uni and it was great after two years of not speaking it wasn't even awkward we really enjoyed our selfs but thats the problem i saw her and all these feelings came rushing back ofcourse i kept em to myself and i think i still love her but i have a gf now sammy she's great but to be truthful she loves me more than i love her and i duno if i should continue lieing to her its unfair but if i leave her and try again with my ex theres a chance she'll say no arrrgghh lol confuesing much lol please i need advice