People regular expression for validating numbers only

I told him I'm sick of it and he asures me he is leaving. I don't know that I would believe he's slept on the couch for 8 years. But I can tell you that after 8 months together I had decided that if he wasn't willing to leave his wife really soon that I was going to end the relationship because they can come up with so many excuses and it is just not worth the stress emotionally and otherwise that we go through.