<human>: I have been seeing my girlfriend for 3 years and we have been living together for a year now. Our relationship has been a good one. We are good company for each other. Make each other laugh still and generally have good times.

She has always been mad about me. Fell madly in love with me and was the one always chasing if I'm honest. Just thinking of those times now brings a tear to my eye. It took me longer to get to really like and then love her.

We moved in together a year ago which probably put a but more strain on the relationship and the last month she has been in a bit of meltdown. She is a bit of flighty personality type and I did fear her anxious flightiness would turn one day turn on the relationship.

The one problem with the relationship is sex. She is afraid of it and always has been in previous relationships. Any holidays we have planned she gets extremely anxious about sex being expected. 

In January she began to think maybe it's the lack of chemistry between us. Next she was messaging a colleague who came on to her one night out. Then she kissed this said colleague.

I warned her when she was messaging that if anything happened it would be the end for us. So when she told me what happened I wasn't even angry. I told her to go stay with her friend and she was quite happy to do that.

It is now a few days later and she is still at her friends. I messaged her today saying we should meet up to clear the air. She doesn't want to meet until she has time to clear her head, collect her thoughts and articulate herself properly.

My friends tell me that she wants out and I'm starting to think that myself.  I'm thinking 2 things. 1 She is gathering strength to finish it. 2 How did this relationship change so drastically so quickly, Do I want to be going with such a flake anyway?

I am now thinking that I need to just break it off and make a clean break bit I do love her.

Give me the gist of the text in a nutshell
<bot>: My girlfriend has flipped from loving me dearly to having total anxiety about the relationship in the space of a month. I owe her time but is she just gathering strength to break up?