OP, please think about this.
He's 36.
You're 25.
There is an 11 year age gap.
There are many, many women who are single, pretty, accomplished, never married, childless, and in their early 30s. Less so as they get to mid 30s, but still plenty of good women out there in their early 30s that would probably match him in term of where they are in their lives.
Do you not think that part of his attraction to you was that you are at least a decade younger than him......and if he likes younger women, he might like women that are even younger than you? Teen porn is the most popular category of porn for a reason.
To some men, that is a trophy. The ultimate prize would be someone even younger than you. There are younger women who quite like thinking of themselves in that way. It makes them feel secure to think they have an edge over other women because of their relative youth....but if he's this type of guy, chances are he's quite ambitious and entitled in that way and he'll drop you as soon as you have the audacity to age.
If you're hoping this materialises into as long term thing, please also know that older men might like younger women for the fact they're more inexperienced, less knowledgable, and less of a threat to their ego than someone that's more their level. When those women get to about mid 30s and older, they soon catch-up with their older husbands in this regard, and some of those men don't like this confident maturity.
Some also go for younger women because they want to be Peter Pans forever, never really committing, and they know they can get away with this much easier with a younger women as it's likely you won't be putting any serious demands on him until you're close to 30 years old....and then he can either keep making excuses as to why he can't marry you or have kids, or he'll dump you for someone younger.
Just be careful you don't waste your youth and you life on him. Plenty of women do get in that horrible situation.