Jon Gosselin revealed he plans to marry his girlfriend, Stephanie Lebo — and his ex-wife, Kate, doesn’t have an opinion on the issue. The former TLC stars announced their plans to divorce in 2009 after 10 years of marriage. They share eight children — 23-year-old twins Maddy and Cara, and 19-year-old sextuplets Joel, Leah, Aaden, Alexis, Hannah and Collin. However, their split was anything but peaceful. The exes were in and out of court for more than 10 years after their split, battling it out over custody and child support. Now, Jon is ready to leave all of that in the past. “I love Stephanie…