Please help me mums. In a nutshell I have been with my partner (soon to be wife) a year and 1/2 now and have been living together since last 1/4 of 2016. She has 4 kids. One is currently at uni and on their summer break. We live in a 3 bedroom house and the third bedroom is a box room. 2 kids share a room.
The problem is that her son (age 21) is back from uni for the summer and has also brought his girlfriend along. Currently the have been back around 4-5 weeks now. They don't have any jobs and all they do is lye in late, eat and then go to bed in the early hours.
I have already had words regarding them cooking during the middle of the night and it being antisocial for the rest of us who work/have to get up.
The girlfriend makes no contribution at all and is basically living full board for free. There is also the issue of the strain it is putting on the rest of the house due to overcrowding.
We are all about to go away for 2 weeks. When The holiday was first booked son and girlfriend were going to meet us over there for a week. Its now developed into them coming for both weeks. I feel aggrieved at having to support people I shouldn't have to.
I love my partner but this situation is driving me nuts. They appear to be taking advantage of the situation and in my book taking the p*ss. It's now putting strain on our relationship.
My question is am I being unreasonable? Any ideas how to tackle without causing damage to relationships?