Stucky
Bucky was probably the last person anyone should want to learn from, when it came to dating. Especially these days - a shame that when the brainwashing programming was erased, an automatic 'How to Date 101' wasn't implanted instead. Of course, admittedly, dating had been the last thing on his mind up until recent times, when he decided he was ready.
"She would - she always would want you to be happy. When we love someone, we want what's best for them," Bucky said. Just like Steve wouldn't have wanted Peggy mourning him for an eternity - no, she'd gone on to marry someone else, have a family. That was a good thing. "When it's right, you'll know," was the best piece of advice he could give.