Me and my sister use to work together at the same place. At this time she was single and I had a boyfriend. So she meet this guy and ended exchanging numbers. They honestly talked for about a week and she ended up dating another guy which is her ex husband at the time.

Well then that guy she exchanged numbers with me ended talking to me a couple of years down the road and is now my boyfriend. My sister had some problems with her husband and moved back to my parents house. And her and my boyfriend are getting to close. They text each other for random things and they go hang out together. He treats me really good and what not but I now and then catch them looking at each other.

I like to think that they would never get to the point of hurting me but you never know! They did use to talk about a couple years ago and maybe with my sisters heartbreak from her husband she kind of developed a feeling for my boyfriend.

Should I be worried?

The problem is yours, not theirs. You expect them not to look at each other, not text each other, something else?

My sisters and I and my friends and I have a pact - we do not and never have dated each other's "ex." Ever. It saves all kinds of problems.

If you cannot trust your boyfriend to be in the company of an "ex," and that includes your sister, you should not be in this relationship.

I would be worried why looks between them makes you suspicious. Would you feel better if she had her own boyfriend? They were attracted to each other before you got with him, and likely have instances of attractions from time to time going forward.

What's really up here?