Being abandoned

I am in love with a guy since my high school days. Its more than 10 yrs now. We never got enough space or time to meet and talk in person. As we were in high school for 2 yrs later moved to different cities than to different countries altogether for education and job. We could meet once in 2 to 3yrs for few hrs but we kept in touch via calls and msgs.

I still face difficulty in understanding the guy as he is very unpredictable. I have been adandoned aftr a promise of marriage by him twice before . Both the times It broke me very bad.

Now again he is back into my life and he again says he wants to get married to me. I am unable to trust anything anymore. I just feel numb and dnt know how to react .