My Girlfriend Came Out As Bi

My gf came out at bisexual and i’m so proud of her! I have caught her watching lesbian porn a few times and I got a little upset because I take it as a way of “if you’re attracted to them, then it feels like you’re cheating on me” and I told her that because to me it doesn’t matter if its a man or woman you’re watching, if you’re attracted to them then it’s cheating. But I have started to feel open about it and I want her to watch lesbian porn as I lick on her pussy and let her experiment a little bit. Is that weird?