My friend seems to like a guy when she has a boyfriend?

Anonymous
Asking for my friend as I don’t really know how to help her.

She has a boyfriend for over 3years now and she recently told me she's been trying to “platonically” reconnect with a guy she used to like. Anyways, she told me every couple of months she will reach out to that guy to see if he wants to call or hangout (behind her boyfriend back).

Recently, they did call each other and she said that the she told the guy she has a boyfriend of over 3years, and that she gets “bored” sometimes.

I don’t think the guy likes her back. And I think she’s burning both her relationship with her boyfriend and this guy.

She’s asking for help/venting. And I’m not sure what to really do.
My friend seems to like a guy when she has a boyfriend?
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