Help?

Genevieve
I feel like I've forgotten how to be happy. I got out of a three year relationship that I believed was going somewhere when suddenly he was telling me to build my life for me without him. I then caught him talking to another girl on valentines day when we were together. He even sent a picture of himself saying good morning to her when we were still in the hotel room.... It's been a while I know but I can't stop think about it all.... I can't cry anymore I just sit here feeling like I should be crying. We stopped talking to each other too... He has been my support for so long idk who to turn too....