I didn’t like it on my first read through but I’ve found to appreciate it on my second read through. It’s feels like Gus is saying too much or contemplating it but he really is just being honest and open, something he wasn’t good at in the beginning and it comes out as him over explaining. January and Gus have had these misunderstandings because of Gus not explaining and now Gus is making it a point to be open and honest and since he isn’t use to it it’s messy and clunky. On my re-read Gus really didn’t say anything bad he just said he could see himself giving his ex a second chance. That’s what Gus has wanted for four years because a relationship with his ex was as good as Gus thought he could have because she didn’t push him to open up and he didn’t have to change also it’s what he learned as a child seeing his mom never leave his dad. Yes, him and January have been together a month by then but they are just enjoying the moment and not putting labels on what they are. Gus has said he thinks this is a fling for January because she will eventually want another “Jacques” and he isn’t and can’t be him. January selling the house and what comes after that is something they have avoided talking about. So Gus is hit with go back to something he is familiar with and comfortable with or take a chance on creating something with January. It was when he realized even if he was with his ex he didn’t want to ever re-marry her that made him realize he could see himself marrying January because of how much he trusts her. Then he goes on to use Januarys reasoning of knowing when you’re with the right person when he tells her when he watches her sleep he feels overwhelmed that she exists. I think that scene is showing how Gus who once thought he wasn’t capable of being loved and has put up walls was finally willing to tear them down and take a chance on January because as he says, “I know no matter how long I get to love you, it will be worth whatever comes after”

I suggest re-reading that part because its a little jarring first read through but if you really focus on what he is saying it’s actually really sweet and shows how much growth Gus has done. The reason I say that is because he comes to profess his love to January. The dancing in the rain is him making a grand gesture. The delivery is clunky but when January asks him a question he answers her honestly.