So are you sure he would not leave you again for other girl??? he has left you for your friend already.. then he came back to you and admit his love then started to date another friend of you.. wow! you still like him, are you he would not leave you again?
for me, a real man is that who just hang on with one pattner, if he looks for other girls and flirt then there is no guarantee he would be loyal to you...
Izabell_02