Help. I think I'm going to lose it

All of the ones I loved to have in my life got married and I have been happy for them, it is blessing because most of them were going to hurt me in the end, but I don’t understand why my happiness for them being married surprised them and made them angry, they probably excepted me to cry and faint from sadness, then it’s my bad to disappoint them. If I were you, I would rather burry my thoughts on my goals and whoever will choose me above any lady from his past, that is if he had a past lover.