confused.com

When chatting with my friend she mentioned how my boyfriend would be watching porn because all "men" do it, I said 100% sure he wasn't because I know him, when I asked him he said I'm not going to lie but the odd time yes, to think that I'd been with him 3 years and didn't expect that it broke my heart, all I've been doing is crying and feeling angry but at the same time I know it's normal, why am I feeling like this? Is this normal?? Please!! Any tips