My crush's girlfriend is jealous of me, what do I do?

Been talking to this guy for a while now who I'm really into. He's constantly texting me, and we have great conversations. Sometimes we flirt when were together. He has a girlfriend though, and I've just been informed tonight that she's read out texts and is not happy. He's angry that she could be so jealous as were just mates, but I really like him. He called me up an hour ago crying asking if he could come over, but then texted me saying he was waiting for her. Haven't heard much since. Any advice?
My crush's girlfriend is jealous of me, what do I do?
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