Tennis looks so fun, but I don't know anything about it
Tennis IS so fun!  It is probably the most popular racket sport in the world.  I have only ever played singles tennis, but people who play doubles love it too!  Are you thinking of taking lessons?
Oh no that's way too much commitment, I'm debating on whether or not I should watch it on TV. So how do doubles work? Is there more than one person per team?
Yeah Doubles is two players against two players.  The court becomes a little bit bigger and you are allowed to hit the ball into the second wider set of lines and it is still considered in bounds.  Looks pretty hard,
Do they use some sort of mechanical court widener to do such a task?
No, the lines are already there, but when you are playing singles tennis you play the two inner lines are the boundary, but when playing Doubles tennis you can hit beyond the inner lines to the set of outer lines.  I guess it gives players more opportunity to score, and avoid getting hurt by each other.
Oh that's so smart. What does love have to do with tennis? I hear that term being thrown around like a tennis ball when people talk about tennis
Love is the term tennis players use for 0, so everyone starts with a score of Love.  I don't know why, it must be a British thing since that is where the game started in the 19th century.