What the team's couple do for Valentine's day:

Stormer and Breez would go out for a picknick or at least for a walk in the forest. It's mainly because Breez loves the nature. She did ask Stormer what he wants to do, but he's fine with anything Breez wants.

Bulk and Stringer would just spend the day together. Perhaps give each other flowers or such.
Geez, Stringer, Bulk, you've been dating for over twenty years, get a room you two!!!

Evo and Nex usually spend time in the indoor garden, but they could go out to an arcade or zoo for Valentine's.

Siren (for those who didn't know, Siren's a part if the Alpha-team) ... Not so sure actually, this is a wild guess of mine. She'd probably spend time with her bf, or with the team.

What the single Pringles do for Valentine's:

Zib will most likely, being the workaholic he is, be in his office or at Mission Control all day, unless Mr. Makuro forces him to take a day off. (Or Wolfie just locks his office and pretends to have lost the key). There isn't anything he can do though.

Quadle would just stick around Zib or the others, kinda depending if they need him or not.

Furno probably spends the day training or playing video games.

Surge mostly does the same as Furno, or he stays in his room.

Rocka will do his daily routine and take Bolt outside for a flight, when he isn't busy with the H.R.T stuff (but most of the team suspect him secretly dating someone).

Wolfie is either in the real world, or she spends the whole day watching videos (or annoys the team)

Creator isn't a lot different from Wolfie, only she would probably give the team paranoia with the future predictions.

Alternatively, the entire household goes out on a picknick or who knows what.

Happy Valentine's day to all the he's and she's and they's and who else is there!!

(Ayo, by the way, y'all gotta read Sirenalagirl53 books, especially the incorrect quotes one. It would also help you understand some certain things in the future of my book)