New Partners Ex?

If you was seeing someone and you lived apart would you find it except-able if your new partners ex started sending fifty texts along with trying it on. Then to rub salt into the wound they still have a key to your new partners place and turn up and stay when they like? What would your thought process be and what would you do if you was in that situation. I have asked them to take the keys back and to make it perfectly clear that they can not just turn up and stay. The reason behind all this is 1, they have a daughter together and 2 the ex has stated that they can't go anywhere now as they have a child together.
New Partners Ex?
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