I have been dating a divorced woman for a year. It was going fine, as her ex was living with his girlfriend. When his girlfriend went overseas, he suddenly moved back in with her. Now she tells me he is waiting for his girlfriend to come back from overseas, and he is paying the bond of the house, so she doesn't have the heart to kick him out. She is divorced living with her two teenage children, with the ex husband, and I am single with no kids. Should I stay in this situation?

It would hurt her feelings if you'll not trust her. When is her ex's girlfriend coming back?
I know you're probably jealous but you need to be matured enough to handle a mature romantic
Relationship with someone. Yes, they may have kids together and their kids might probably do
Things to patch their parents up but you need to be confident that she will never leave you
In order for your relationship to work.

Just trust her and if she'll get tempted then just move on. Give her a fair chance
To prove her love for you. You'll never know how much she loves you until she can resist
Temptations or can earn your trust.

Has the time and quality of time spent with you changed? If not, I´d say you have nothing to worry about.

How long have they been divorced? Have they remained friends or is this something out of character for their relationship (as far as you know?) Has there been anything said or done in the past year to make you think she wants to be with her ex?

Is he the type who uses the house as a hotel? In other words, his belongings may be there but he isn't.

I suggest talking to her and explaining why you are concerned. Get some more details and make any decisions based on 'facts'. Honestly, if she is the type to cheat or re-kindle something with the ex, that can/will happen whether he is in the house or not. If you trust her, then see what happens. If you don't, then move on.

This may be a good time to examine your feelings and expectations for the relationship. Leaving the ex out of it, where do you see this relationship going? Is the relationship what you want? Are you wanting more? Do you want a ready made family? Is it getting too intense and this makes a great excuse for moving on?

I would surely ask her how this changes your relationship, if at all it does, other than your worrying about it. How long is this arrangement for?

Have you met him? Does he even know of you? Its not the perfect dating situation, but can be workable with honest communications, and trust. I wouldn't like it though, but it would depend on a lot more facts than you have given what I would do about it.

What is the sleeping arrangements ? It often ends with him and her back together? How long have you been together.

Personally I would walk away unless I had been with her a long time.