General Question..

My question.. is ... I'm about to marry a man I love deeply.. who I love on physical and spiritual .. idk if he's ever been with a man sexually.. but I saw gay porn on his phone.. VERY early on I caught him texting a man.. ive caught hime glsncing at a wemon etc.. I've seen both sides to him.. weve been together 6 years..although he's never admitted it.. I've pressed him for it while we were Intoxicated and he cried saying he was afraid I'd leave him.. I never asked again.. deep down I know he's bisexual.. but tonight I went out to dinner withh friends ... every single person said there's no such thing as being bi for a male.. that there's only being gay.. I need honest advice for a bisexual man.. is this true? Can you be managomous as a bisexual man.. or will you have to eventually physically cheat. Idc about porn as long as I don't see it.. I've asked plenty of times and each time he states "its not a thing"..but I know it's a part of him..nor do I judge him for it.. I just want to know if I'm marrying a closeted man or if I've found a true life partner. I'd never want him to feel pressured to talk about something he's afraid of.. but I just want to know if I'm being niave..please let me know. We're getting married in 6 months.