Is it a red flag to be jealous from the beginning?

He’s my ex boyfriend from middle school. After 15 years we found each other at a friends house. He was getting jealous about every guy around me. Then, he gave me a ride home because I was tipsy and didn’t want to drive. The next day he was supposed to give me a ride to pick up my car and he never told me that he kept my car keys until I was looking for them and asked him. Should I see him again?

Updates
+1 y
I’m 27 not 52. And this behavior is from the first day we met again. I just want to know before I go out again.
Is it a red flag to be jealous from the beginning?
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