Is it finally the end for my husband and I after 2nd time cheating?

Duh, leave him. People don't change, they just get better at hiding who they are and what they're doing. If he loved you he wouldn't cheat, he's behaving like a bachelor which means you hardly exist to him, get out while you can, you'll regret it everyday if you don't. Get on match.com or eharmony and find a REAL man.