How to handle... be patient or do nothing with her?

I am working with a lot of Nationalities, and last week my Polish colleague from Wroclaw came to my place. we had a great time together and she told me that she just started again with her ex-boyfriend to try. But I know from experiences that It is not easy.
I like her very much and she likes me too and she is really a type for me. What's the best advise to behave to her? Do I have to be patient and do nothing? Or do I have to contact her more.....?

Be cool Willy...Be cool

What do you mean by this? Are you two dating, or just doing stuff as "buddies" or colleagues? Why did she mention her ex? How do yo know she likes you? And, assuming she does, what makes you think she likes you "in that way?"

Great time together with going out having a drink, we talked a lot about different items and she stayed in my appartment for sleep. She find me sweet and honest and send me sms very often with kisses. Mention her ex.....I don't know, I did not ask her why she went back to him.

if she told you she is back with her ex. then it doesnt sound very promising for you, but if she is still messing around with you as well, then sounds like she is playing games. Either way it doesnt look too good in my opinion.

Sounds like something one might say about their sister. I think you're in her "friend" category with nothing else on the horizon.

i'd say don't waste your time with her. in whatever capacity. she wants her cake and to eat it. Before you know it... she will get back with her BF and then you are out of the picture completely.

Indeed mate. She wants you both, but there is a fat chance in the end she chooses for her ex. Love can be a deep thing, and it is mostly not something you can put on two people. If she have her head with her ex, then haven't it with you. :-)

Just looking for someone else. Dependency is not sexy. If she sees that you are going on and meeting others it shows that you have value. Thus making you interesting. It would not make her love you, but it definitely is better then hunting for her..

Keep her as a friend, and allow her to be your "inspiration". In other words, it's okay to enjoy the feelings for her. But make sure you keep going out and looking for other girls.

That way you can have the best of both worlds.