Am i selfish with my thoughts?

My fiance, who is 3 yrs younger, and I just started to think about our first home. Because he is younger, of course he graduated from college 3 yrs after i had. We both lucky that we got a good-ish paying job right after college so we immediately thought about a house for ourself. However, bc he has just worked the fulltime job for just nearly a year, he has not saved up much while i have some to put down for the mortgage. My parents are willing to lend/give me some money as much as they can. Vs his parents prob cant afford to help.

If we are closing a house soon, the downpayment + home rennovation money will be mostly 80% from me and my family. I know he and i will be ok to handle the monthly mortgage tho. Its just he doesnt have much in savings for any costs upfront.

I’ve been thinking about this a lot and the picture of me paying most of the money for our home.. idk am i too selfish for even having this thought? i was my choice to be with someone younger than me. I knew what i was getting into and i chose him. I love him but cant help stop having these thoughts. Most of my girl friends get to move in with their man who is older and financially stable and they dont have to worry about their finance at all. Tbh im a bit jealous!!!