I shall set the scene for you:
-You are a male of approximately 25 years
-You are hot
-You are in a long term relationship with a mature lady of approximately 40 years, give or take a couple of years
-Said mature lady has 2 children, one of which might even be a teenager by now (maybe, who cares)
-Said mature lady is also not all that hot
Now, in this situation, what would your reasoning be to remain in said long term relationship when there are many girls your own age without children who would probably also go out with you?
Keep it clean, this is a family site. Thanks.