<human>: I have a problem. I get jealous easily. I think it's due to past relationships going awry.

So my gf tells me that she's going on a drive to a nearby rural town with a guy friend to pick up pie at a well-known store. it's about an hour drive. seems like a romantic little venture, but in reality i'm pretty sure they're just going as friends. I have seen them flirt around on fb before, so maybe that's why i'm getting so jealous. the thing is, she is doing nothing wrong here; i'm just being immature and untrusting. 

How can I stop from feeling so goddamn jealous at these little things? How are most boyfriends able to be OK with their gf's having dates/outings with other guys? Is it a self-confidence issue?

Summarize the given text in a few sentences.
<bot>: gf is going on a "romantic" drive out to a rural town to pick up pie with some guy. i feel jealous.