A happy woman/girlfriend/wife could never cheat.
Judging on your post, you are not a good bf nor be a good husband. Why take care of your kids later when you can take care or provide for them NOW?
You have wasted money for those places? Which we all know why men go there coz of those "red lights"! Your ex cheated on you coz you been ....... around you ....! And you want to drag this new gf of yours to be with you in uk? Without even telling her the truth?
Do you have any idea how long it is to wait for the visa? It takes a lot of patience, love and Trust for both of you to wait that long.. I bet you will be tired of waiting then and you will have another reason for you to break up with your gf...nah!
Don't waste your time and your gf's time.. Just jerk off or might as well go to hell!!
Cheers!!!!