Do you still use tinder, even tho you're in a relationship?

Do you ever like, stop flirting/sexting or do you even cheat? I don't really know if my long-term boyfriend, is actually a narcissist that has gaslighted me for so long, that I truly do not understand how this works. Accordning to him, all dudes like dat. According to me, (I ONLY refer to myself here) I couldn't stand the thought of doing this to him.
Please tell me that I'm wrong.
Also. Did he use Tinder to cheat on me, or not you think?
Do you still use tinder, even tho you're in a relationship?
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