As Woody Allen said, "The heart wants what it wants." Love is too precious to let go. You're right -- you have to take a chance that it might work. At least that's what I'd say.
I hope that you're not comparing these circumstances with Woody Allens? What Woody Allen did was cheat on his wife after a 12 year marriage with her adopted daughter that she raised since she was 8. Woody Allen became married to Mia Farrow when Soon-Yi was only 2 years old, so he did take part in helping raising her since than. Then 20 some years later, she finds naked photos of her own adopted daughter in one of Woody's (her then husband) apartments. It doesn't get any more shady and twisted than that.
Even though Soon Yi was adopted and not blood-related, it doesn't matter, Woody Allen is messed up. He manipulated and took advantage of a situation, and cheated on his wife with a girl who he helped raise since she was 2, and is 35 years older than her. I usually have no problems with age gap relationships, but this is different. If Woody Allen was a regular guy and did that, he would of probably been chastised by everybody.