Can someone help me figure out what this symbol means?

[OkFalcon]

I've pasted the photo image below. This symbol showed up on my partner's notification bar and I need help figuring out where it is from. My partner has been acting extremely weird and wondered if it was a dating app?

 

[Hadron]

Malwarebytes, which as the name implies is an anti-malware app (commonly but incorrectly called "anti-virus").

It's about as far from a dating app as you can get.

 

[Dannydet]

Malwarebytes as mentioned