Do guys joke about marriage?

So my summer bae of like almost 3 years and I have never made it official. I'm fine with that. But... we enjoy each other, we are both extroverts, we been close for almost 3 years.

The rules are changing, when he would decline holidays with me, he now invites me (to fly home with him), he even was even rehearsing what he would say to my mom. I have spoken with his. I've hung with his brothers and cousins.

Since a year ago (trip to vegas) he's been talking about eloping. As recent as this week when i suggested a trip to Mexico. (He found his passport)

I know all too well to take him seriously, guys joke about marriage right?
Do guys joke about marriage?
Do guys joke about marriage?
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