Ok im 17 and need dire attention...im stuck between two men..?

ok i have a fiancee who is prison for 5 yr nd im in love with him...and today my ex came back nd my old feeling came back as strong as poissible...i nned help to choose which one..oh one in prison hes 21 one out of priso hes about to b 20 ??!?!?! and tonight me nd my ex made out like a lot...lol and now i like him a **** of alot more ugh i need help to choose and if its my ex i need help on tellin someone tht ive been datin for 1 yr tht its over nicely...