Revenge Cheater

Long story short:

My husband was cheating on me online. I was broken. An old bf from high school happened to message me to see how I was doing and I just vented. He told me all the things I wanted to hear and we even met up twice, but didnt go no further than kissing. I know I am wrong for this, and it's no excuse but my husband and I have been having problems for years now and infidelity has always happened on his part and I just broke. The guilt has set in now and I don't know if i should tell my husband or just quietly break things off with the other guy without telling my husband. I dont know if me and my husband can make it work (even before this revenge cheating) but part of me feels like I should try again (for the millionth time)

We have individual therapy scheduled in a couple weeks and we can (and will) choose to do couples therapy afterwards.

Any advice is greatly appreciated.