Erik and Charles had a few casual dates, which pretty much only involved sex because Erik doesn't wanna date because he wants to concentrate on his kids (Lorna, Wanda, Pietro/Peter) and also doesn't want to introduce them a lot of new people. With Charles, he already went on more dates than usual, but on his fifth date, he gets sick, and he texts Charles to cancel it, but then Charles stands in front of his door with soup, medicine and a book for children. Erik is too weak to protest, and nobody else is there to help with the kids, so he lets Charles in. Charles is great with the kids, and he makes dinner while talking to Lorna about books, and to Pietro about music and to Wanda about animals, while also taking care of Erik, and Erik hopes it's the medicine, but he's really close from kneeling down and proposing. Erik passes out to the bedtime story Charles reads the kids. The next morning, he wakes up to the sound of his children giggling and the smell of waffles and coffee, so he walks into the kitchen to see Charles making breakfast for him and his kids while listening to Wandas rambeling, while watching Lorna and Pietro in the living erea, and Erik is sure in this moment that he's gonna marry this man.