Scared of getting attached to hookups, how to stop

hey guys!

I’ll make it quick. basically this summer i had my first situationship where i had sex for the first time. Everything was amazing and romantic until he broke my heart.

the thing is that i was very surprised at the fact that i didn’t realize i had developed feelings for him until after the breakup.

now i want to hookup with guys and i have had many opportunities but i always end up declining or finding some excuse to not see them after the second or third date.

i think this is because i am scared of involuntarily getting attached / falling in love and then getting badly hurt.

so my question is: how do you guys deal with it?

do you get attached but don’t mind it or do you shut off some part of you so you don’t get attached?

or some other option i did not consider?