Is June Nick's first love?

I know that this show is more than the love triangle. But I was rewatching all of June and Nick's scenes after this week's surprising ending, and this thought jumped out at me while watching their scenes/insane chemistry. Is June Nick's first love? In the earlier seasons, he falls HARD for her... and quickly and madly. Like he would do anything for her and he loves her and deeply cares about her all while hardly knowing her, aside from what little conversations they're allowed to have. I know he was young when he started/got hired, and he had sexual relations with that one Martha in the kitchen in season 2, but other than that we don't really know much about him and just the way he loves her and has such strong feelings for her makes me wonder if she's his first love.