Dear males, esp the blokes in their 30s and up, esp the blokes who do have a life partner.
Standard response when a girl way too younger than you approaches you and reveals that she is attracted to you:
I think I'm better off breaking your heart right now than wrecking your life later.
And mind, i'm not asking the ones stuck in loveless situations to not seek love outside. Please seek it in grown up women rather than taking advantage of a young girl's immaturity. All youth will have crushes; that gives you no license to mess with them. If you are your age then exercise the maturity and restraint appropriate to it.