Am I crazy after six month I am flirting again.

It's been six months since my Smokey died.  I feel like an evil woman flirting with a guy at Legends Bar.  It has been on-going for awhile now.  My brother Don and I went to Legends last night again flirting with this guy named Bill.  This morning I felt so bad that I cried.  I feel as if I were a very evil woman flirting with Bill.  Smokey was the greatest love of my life.  I never met anyone like him.  Bill doesn't look like Smokey at all.  Smokey was a brunette haired man going gray with the salt and pepper hair color when he died.  Bill is blondish.  Their birthdays are 3 days apart.  How weird is that?  I feel as if I am dishonering Smokey cause I am interested in Bill.  How can that happen after six months?  Bill has been separated from his wife for awhile but not divorced.  What do you make of the entire thing?  I want to be smart about these things.  Bill's been the first man I am interested in after Smokey so I want to be cautious about the entire thing.  I don't want to make any mistakes.  I am not interested in a casual relationship and am a naturally born worrier.  I chew things right down to the bone and into dust then put it in a blender again.  I hate doing this thing like thought obsessing till it turns into dust.   I know my brother Don and friend Carol both say to go with it.  I do not have to ask them at all.  Actually the whole things is pretty scary for me.  I have been with one man for ten years.  I am so out of the whole thing.  Every thing about dating again is absolutely frightening for me.  Has anyone gone through all this and any advice?  It would be greatly appreciated.