My girlfriend will be fucked by the owner of the holiday home to pay for the accommodation [cuck]

Let me start by saying that my girlfriend has completely natural F cup tits and they are simply perfect, I think any guy would be turned on by having tits like those.

My girlfriend and I will be staying at a house by the sea this summer, this house is owned by an older guy that my girlfriend has known for several years (I don't know how), the fact is that it's not the first time she's been there, in the past years she's been on vacation at this guy's house with some friends.

We won't be staying with him, it's a house with two bathrooms and two separate bedrooms but with a shared kitchen, so even if we sleep in different rooms we'll still have to have dinner together.

The problem? This guy, in addition to being older than us (my girlfriend is attracted to older guys), I know that he asked her to see her huge tits but according to my girlfriend she always refused.

The other night while we were having sex I told her how happy I was that this summer at the beach we would have a little more time to dedicate to the two of us (we've been a little short lately) and she replied that she would like to invite that boy too, I asked her for explanations and she giggled and told me that it would be the way to pay for the accommodation.

Then she explained to me that she hadn't paid it yet and that she was planning on paying it like this, I didn't understand if she was joking or not so I asked her: "what if there was a daily tax to pay?" "it will mean that I'll get fucked every night" she replied, we were both very excited, she was soaking wet and I was very hard.

She also confessed to me that she would love while he and I were sitting waiting for dinner she arrived topless with her tits completely out saying "the aperitif is served" and then had her tits sucked by that boy while I watched.

Should I be worried? It excites us both.