My best friend shagged my fwb and am don’t know what to do right now.

So I (21F) have already been fwb with this guy (28M) for over a year now. Fairly casual with cuddles plus sometimes we’d watch movies together or cook therefore not an entirely normal fwb situation but it wasn’t going anywhere romantic and I was happy about that. Or so I believed.

So this afternoon I receive a text from my best friend ‘H’ (28F) that while out they got actually drunk and slept with each other last night. She texted me about it because she feels actually guilty because she knew about my fwb scenario.

Now I know I’m not supposed to get upset regarding my fwb sleeping along with other people since it’s not anything exclusive and I was resting with others and he’s sleeping with others. Yet I feel pretty hurt regarding the fact my friend slept with him.

As a result of what is happened and the way that will I’m feeling I feel like I need to end things with my fwb but we are in the same friend team so it’s going to become awkward. Also don’t understand what to do with my friend either therefore i need advice on both.

Sorry for any formatting problems this is on my cell phone.