Guys - do what is best for you both.
Although it seems Dottie has more to lose than Chris.
Chris if you are deadly serious about his relationship give Dottie time to work it all out for herself. You know that if you hurt Dottie you would have a forum of people after you

BUT I don't believe you will.
I do admire your strength of commitment shown - actually posting your feelings for each other. Like people have said - you only get one life - grab happiness with both hands.
Dottie are you happy at home?
Would Chris offer you more than just love?
Can he provide for you?
Would he make you happier than you are now?
What would your kids say?
Chris - is this just a fling on you part?
Not being funny - but what about the age difference? (Yes Sarah I know

) but had to ask.
You both don't need to answer these questions in public.
You two are very special people - think long & hard before you do anything rash.
Whatever you decide - GOOD LUCK