Would you be okay with this?

[Anonymous]

I don’t know how to exactly describe it. But my boyfriend did this thing where he tickled his best friend arm by running his fingers up and down her arm. He does it to relax her.

That is normal behavior between friends

No, I would call him out for crossing boundaries

[Dazed0N0Confused]

I would calmly tell him that doing this makes me feel uncomfortable & to have a conversation regarding it.
Don't go accusing anything & don't use a harsh or whining tone.
Simply bring it up "Babe, I want to let you know that you touching [insert girl's name here] arm like that makes me uncomfortable" and leave it at that until he responds & go from there. Keep your explanations short & see where his questions & responses take you.
You don't want to make him feel like he has to choose between you & his best friend, it's not your place to dictate his friends, but let him see that you want them to respect your boundaries & that particular interaction is where the line is.

[Anonymous]

I swear girl best friends are almost always trouble, I’ve never seen one that was purely platonic unless either one wasn’t interested in the other, one or both were in a relationship, or they’ve tried in the past and it didn’t work out. The arm tickling thing for comfort is weird, having a girl best friend is weird. My current boyfriend has showed me that dynamic is sooo not ok.

[DaveJord]

Yeah, you're dating a guy whose best friend is a girl and you know it. So honestly its completely acceptable, they were friends when started dating right?

Now for me I don't by into the whole guy and girl and we are just friends thing. I always think there is some sexual tension involved on some level... but that just me. I am never just fiends with a girl unless I would fuck her if I could.

The real issue is that your insecure about this friendship, and if I was you I would be to.

[Guy13]

https://www.youtube.com/embed/RG0ochx16Dg

Old TV 📺 with grandad….

[Wise4myage]

That's not normal among friends of the opposite sex.

[Rockstarrrrr]

Seems quite inappropriate

[driven159]

talk to him not us