Is it normal that my boyfriend googles shemales?

If it would have been one isolated incident.. perhaps he just could have been bored and whatever, but three different times? What the hell??!? How many things HAVEN'T you found??!!? Sounds really fishy to me. And he sounds immature, caught off guard, or both from denying it each time when it's so obvious. It almost seems like he's wanting to be caught, leaving it out to be found 3 different times. Seems bizarre to me. I've known of men carrying on with gay lovers while having a wife and kids at home, and that could, aside from being cheat on. Your health could be at stake so this definitely shouldn't be swept under the rug! Although it's extra complicated to distance yourself because you live together. Does he have a lot of time with his friends when you aren't welcome? Have you caught him lying about very many things before this? If this was me, I would mess with him by leaving behind random sexual items like condoms, men's thong underwear, etc and wait for him to ask you about it, and say the same thing he's said and maybe he'll realize what a creepy douche he's being.