Should I tell my ex about my new girlfriend?

Ok I split up with my ex 1.5months ago. She dumped me cause we were having a long distance relationship. We've been together for 2 years. I wasn't happy about her decision but it wasn't like we had an argument or sth. we figured out it was time to split up. I found out afterwards that I was better off without having to worry about her anyway. After all she never showed much affection to more cared about my interests. So two weeks after our split-up I had a one night stand which turned into a relationship. It`s not 100% sure with the new woman, cause she doesn't want to rush into things, because of her 3 year old kid, but it feels right and we meet like every second night.

My ex for her part has only once send me an e-mail and asked me how I was. I replied telling her I was ok. I don`t want her back, but I still like her and since she tends to have depressions I don`t want to hurt her by telling her about the other woman. When I went to her parents (they still live nearby) to pick up some of my stuff they told me that she was nearly having a break-down because of too much work at her university and homesickness. She was ok before we split up so I figure it might partly be because of our failed relationship. So far it was easy to avoid telling her cause she never calls or writes and so I don`t do it as well, after all she dumped me! But next week she has a few days off and her parents told me she would want to meet me. ( Typically of her not to tell me herself)

I really think that the other girl is much more what I need now, and I`m somehow in love with her. So I don`t want to hurt her as well by meeting my ex. She is worried about it anyway cause our split up is only that short time ago. But my ex might really fall into a depression if she has changed her mind again (she has done so 2 times) and finds out that she has been replaced two weeks after we split-up. I always tried to give her the feeling that she was sth. special to me and I would love her no matter what. I meant it as long as we were together. But now I only like her and feel sorry for her having a depression. So should I meet her and tell her? Not meet her not tell her? I have to consider the new woman`s feelings too, and right now she much more important to me. But if I don`t meet with the ex I should at least have a good excuse! I would like to keep up friendship if a bit more time has passed. Please help
Should I tell my ex about my new girlfriend?
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