Girlfriend is the same as "flickvän" in Swedish.
flickvän
And is "och" in swedish.
To say you're in a relationship you say "Jag är i ett förhållande." Or you could say you already have a boyfriend/girlfriend: "Jag har redan en pojkvän/flickvän."
På svenska
"King" in Swedish is "kung".
Vill du bli min flickvän.
Suedoise is French for Swedish.
Equality is "jämlikhet" in Swedish.
"Goal" in Swedish is "mål".
29 is tjugonio in Swedish.
Episode is episod in Swedish.
Small is liten in Swedish.