Who cares about what others think? You should be proud of yourself that you lost weight and got healthier!!! If you're happy with yourself, what everyone else thinks does not matter. The only thing that is attractive is someone's personality, if you found someone who thinks you're not attractive cause you have stretch marks, then you need to be surrounded by much better people with much better minds. If we were to go by society, we would be living in an even worse world than we are right now.
Everybody has stretch marks especially on their ass tbh
You should be proud, because you lost weight and that's how you got them. Better have stretch marks than be unhealthy
I have them on my thigh and I used to be really insecure about them but a lot of teenage girls at my school have them to so you just have to accept that its a part of life and it shows body growth and change. If a guy has a big enough problem with it that they dont want to be with you anymore then you definitely dont need to be with him.