Glee season 5, episode 16, “Tested,” airs tonight at 8 p.m ET on Fox! Catch up on all the stills and this week’s promo to get you ready for the new episode.

Last week on Glee, Kurt found himself in the hospital after trying to stop a fight but luckily ended the episode on a high note. Sam and and Mercedes found themselves back together, even though Mercedes was nervous that Sam being white might hurt her singing career. In the end Kurt was able to knock some sense into her and the couple is officially back on.

To catch up on all the details of last week’s episode you can read the full recap here.

Related: Listen to tonight’s new Glee songs

The synopsis for ‘Glee’ season 5, episode 16, ‘Tested′:

“Blaine discovers his newfound love of ‘cronuts’ has the residual side-effect of weight gain – namely, the dreaded ‘Freshman Fifteen.’ Combined with witnessing a more physically fit and self-confident Kurt’s star rapidly rising at NYADA while his simultaneously wanes, the increasingly pudgy former dreamboat begins to suffer a crisis in confidence… leading to some uncharacteristic behavior. As ‘Film School Artie’ enjoys a success with the ladies that ‘High School Artie’ never could have hoped for, he is quick to avail himself of all opportunities presented him. However, he soon discovers that his Casanova’s ways come at a price, one which may preclude him from making the one special connection he truly desires. As roommates Sam and Mercedes explore being a couple, she confesses that she is still a virgin and is not sure when (or if) she will be ready for them to make love for the first time. While the smitten Sam agrees to wait as long as she wants, he nevertheless tries to do everything he can to prove his worthiness and expedite the process… while she seeks outside advice from several sources.”

Watch the promo for the episode as well as two sneak peeks below:

Check out some stills from ‘Glee’ season 5, episode 16:

Tonight, Glee is all about sex and its repercussions. Artie seems to have become quite the ladies man and we can’t wait to see him perform “Addicted to Love” by Robert Palmer. Mercedes and Sam continue their courtship and the sexual tension will be at an all-time high when the pair debates sleeping together for the first time.

Where to watch ‘Glee’ season 5, episode 16, ‘Tested,′ online:

You can watch Glee online by visiting Hulu or Fox’s website starting Wednesday morning. A free stream will be available in order to watch the show.

Watch Glee season 5, episode 15, “Tested,” tonight, Tuesday, April 15 at 8 p.m. eastern/pacific on Fox.