He wants to meet up with the girl he met online

Hi Sally, thanks for getting in touch.

If you are not comfortable with this then show your concerns. If the roles were reversed how would he feel about your doing this? He never met her in person so whatever relationship or connection he had with her was purely social so there is not a lot of history there. There could be nothing to worry about at all- just a catch up meeting if their relationship leaned more towards being friends, however if you feel like there is more going on here then talk to him about it. Perhaps ask him why he feels he needs to meet up with her. Men tend to place a lot of importance on sexual compatibility and if he hasn’t been with her in this way then the likelihood is the connection will be much stronger with you.

Is she now attached? If this is the case could you suggest that you meet as a couple of couples? This could be the compromise you put to your partner. Women compare themselves a lot to other women so when you meet her try to see her as someone who has flaws as well as things that you might envy- the point is he picked you- if he wanted to be with her he probably would have made this decision before he got with you- she may have lived further away but for those who really want to make things work distance is no obstacle.  It all comes down to trust- if you trust him then you should know deep down that he wouldn’t hurt you, however if you have some doubts then this is something you need to work on, putting the situation with girl aside.

Get back in touch if you have any more questions, good luck,

Lucy x