Is it getting hot in here? Or is it just our Lip-Lock Knock-Out tournament?

We're now in Round 4 in the battle to find the ultimate love song, and there's only four songs left to duke it out.

Ciara's "Body Party" didn't give Selena Gomez's "Come & Get It" a chance, moving on to Wednesday's (February 19) match-up with Ariana Grande's "The Way," which put One Direction's "Kiss You" in a tumultuous frenzy to hold on before eventually beating it out.

On the other side of the bracket, Smilers will be happy to hear that Miley Cyrus' "Wrecking Ball" swung through at the last second to knock out Fifth Harmony's "Miss Movin' On." And although Bruno Mars had the lead for a second or two with "When I Was Your Man," Pink's "Just Give Me A Reason" stayed strong, sprinting to victory.

View and share the bracket!

The four songs made it through seven grueling days of eliminations. Starting with 32 songs, voters whittled down the smoochiest make-out tunes in recent history. Did your favorites prevail?

Thursday marks the championship round when only two songs pull through to the end, and on Friday, we'll have a winner. Start voting now to help us decide who wins the Lip-Lock Knock-Out.