My straight boyfriend has a history of downloading grindr? How do I approach this?

Hi. I’ve (female) been with him 4 years, he had a history of using cam/video sites behind my back but I have no evidence he physically cheated. I now found out he downloaded Grindr on work trips away for the whole 1st year of our relationship. Is he gay? How do I break up/ tell him I’ve found out his darkest secret without hurting him? I’m so torn! I love this man. Help!
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The thing is, Grindr only happened about 6 times during our first year and hasn’t happened since. It just stopped. But the cam girls /chatting& sexting to girls online continued right up to when I moved in.
I confronted him about the cam girls only, and he has sworn he’s stopped.
My question is, is he gay? Or do straight guys get curious and explore what’s out there? I am more than likely going to leave but I have to wait until my daughters school holiday - she will need to move schools. I’m so
My straight boyfriend has a history of downloading grindr? How do I approach this?
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