Go With Liam To Prodromos Edit
Head to Prodromos on Eos. Interact with a navpoint for "Liam's Surprise" to start a cutscene.
It turns out that Liam has set up a game of soccer (football) for the crew. Ryder and Liam talk about Liam's past in the refugee camps.
Ryder can inquire about why this wasn't made to be a bigger deal and Liam will respond that this is just for the crew.
Ryder then joins the game
If Ryder has flirted enough with Liam before, there will be different dialog and an opportunity for commit to the romance.
The missions ends after the conversation.