<human>: Hi, My housemate we will call Tim has been dating his girlfriend who we shall call Kate for the good part of two years, Recently We have moved to a new house, and Kate has started university, Her university is two hours from her house and she has university 5 days a week, Tim offered for her too move in as our home is a 10 minute walk from her university, but she declined as she said "she can not afford it"

1 month has passed and university has started and she now stays all 5 days she has university and most weekend, She does not contribute to rent or bills and Tim sees no issue with this.

I think she is a lovely girl but my other house mate Jake and I feel it is unfair that she declined moving in and she still is there 90% of the time for free.

Jake and I would really like to confront Tim about it but we're not sure how to do so without causing an argument. So Reddit, any advise on how we could deal with this situation? 

I hope this has all the info needed.

Can you give me a shortened version of the text?
<bot>: Housemates girlfriend refuses to contribute to rent or bill but lives here 90% of the time and so do her belongings.