Should I break up with her or confront her?

[verb]

So I don't have a twitter, but i found out my girlfriend following her ex on twitter. however she is not friend with him on FB and i have one. She also cheated on me with him, but its been over a year and she's been completely committed to me. But she created the twitter this November which means she followed him recently. Should I be upset or break up with her over this? She is a lovely girl and buys me everything and tells me she wants to be with me forever.
To the guy who responded- I love her because I fell in love with her personality. I just said she buys me things and tells me she loves me cause she acts like she is realllllly in love with me. But why would yoiu follow your ex on twitter, or in that case do anything to get involved with him when she cheated on me?

[Whereever]

How old are you exactly? You like her because she buys you everything?

Following someone on twitter is nothing, just being friends. Don't be paranoid.

[Retribution]

Personally I would be upset and I wouldn't even be with her after she cheated. But since you are I would just ask he why she's following him on twitter and just talk about it.

[Chelsey T]

If she is in a relationship, yet possibly talking to someone she use to sleep with, then she will probably cheat again.

[Karas37]

Let me put it this way my friend they cheat once they'll cheat again, the cheating begins when she starts getting bored of the same routine and the other guy seems more outgoing and spontaneous or is better looking than you or more fit physically, most of the time the guys they leave you for, turn out to be jerks and cheat on them, then they decide they want you back. That's where you draw the line and never, ever give second chances that way hopefully they will learn their lesson and not do it to the next guy... good luck.....

[Amber]

I think it's a little weird that she follows him on Twitter (which you don't have, therefore she might assume you wouldn't know), but isn't friends with him on Facebook (which you do have, and would know). I would confront her.