Sorry for formatting. I'm on my phone and English isn't my first language.

I'll refer to him as C. C and I have been together officially for only 2 months. So far it has been going really good. And we've dated a bit before we became exclusive. We're in the honeymoon phase. So 

So my sister lives in Aruba and is getting married. And C is also invited to come. We live in The Netherlands.

So we were looking at tickets together on his tablet. He went to bed and I wanted to continue looking. So I went back for the tablet and I saw that his browser gave him the suggestion of frequently visited websites. Amongst that I saw this adultfriendfinder. Which I found odd. So I clicked on it and saw that it had notifications, that only happens when you have a profile. And indeed. I saw that he used it while we were already together. 

I'm mostly disappointed. I don't know what to believe. He told me that he very green in the sexual area and that he's not into lots of kink but this portrayed a whole different side of him and I really don't know how to approach him with this and I need advice.
user
boyfriend has an account on an adult website.
assistant
Sorry for formatting. I'm on my phone and English isn't my first language.

I'll refer to him as C. C and I have been together officially for only 2 months. So far it has been going really good. And we've dated a bit before we became exclusive. We're in the honeymoon phase. So 

So my sister lives in Aruba and is getting married. And C is also invited to come. We live in The Netherlands.

So we were looking at tickets together on his tablet. He went to bed and I wanted to continue looking. So I went back for the tablet and I saw that his browser gave him the suggestion of frequently visited websites. Amongst that I saw this adultfriendfinder. Which I found odd. So I clicked on it and saw that it had notifications, that only happens when you have a profile. And indeed. I saw that he used it while we were already together. 

I'm mostly disappointed. I don't know what to believe. He told me that he very green in the sexual area and that he's not into lots of kink but this portrayed a whole different side of him and I really don't know how to approach him with this and I need advice.
user
Boyfriend has an account on an adult website.
assistant