Dating a "sort of" married man

[TheBest!]

Ok. Before everybody says :"Oh my God how dare you!" I will put the cards on the table.
My Ex invited me to a club with his friends, he introduced me to this guy who I guess he liked me We danced and talked and he told me he was separating so I said to be brave and wait for the right girl for him (to cheer him up). The next weekend we went out again with the whole group and there he was. My ex and our friends told me that he was really in a tough situation with his bitchy wife and that he was the kind of guy every girl would like to marry.
True. We started talking and I offered myself as a good friend and made very clear I didn't want anything else besides friendship, but he started to take me out, buy me flowers, music and for my birthday like a week ago he took me to this fancy restaurant, gave me a handmade(he made it) jewerly box and inside a three gold necklace. I was wow!

Facts:
I like him but not 100%
He still lives in the same house with his wife, sleeping in different rooms (friends and ex confirmed that)
He has a 1 year old son (yeah I forgot this guy is 6 years older than me)
He said he is waiting for his broker to end the paperwork to move out to his own place.
This guy can't divorce since they got married in a catholic church (they are supposed to be married till death set them apart)

What do you think? Should I keep going out with him or disappear from his life completely.