Next week's episode 17 of "The Fosters" season 4 will feature Callie (Maia Mitchell) and AJ (Tom Williamson) possibly heading to splitsville as she catches him getting kissed by another girl and reciprocating it.

Things are still definitely not looking good for Callie in the upcoming episode of "The Fosters" season 4. While she has to focus on her work in the legal system for her past wrongdoings, her so-called tunnel vision is definitely taking a toll on her relationship with AJ, who, despite being supportive of his girlfriend, also longs for her time.

Based on the promo for the upcoming episode, Callie is heard asking AJ if they are okay, to which AJ replies that he wants her to be with him. After Callie tells AJ, "Well, I'm here now," the next scene shows Mariana (Cierra Ramirez) telling Callie that, perhaps, all that AJ needs is reassurance. Before the teaser promo ends, Callie sees AJ playing basketball with another girl, who eventually kisses him.

Meanwhile, it has been learned that the upcoming "The Fosters" season 4 episode will also feature Stef (Teri Polo) meeting a teenage girl named Diamond as she takes a new assignment in human trafficking. Mariana, on the other hand, will try to tone down Jesus' (Noah Centineo) blues by starting a special project with him after he has been given a pair of prescription glasses for his traumatic brain injury.

Reports also claim that the upcoming episode 17 of "The Fosters" season 4 will also feature Lena (Sherri Saum) facing the consequences for holding an off-campus LGBTQ sex education class for Anchor Beach students in this week's episode 16. While the session overwhelmed Lena because more students attended than she expected, it turned out that the attendees did not have the parental permission slip as they are closeted gays.

Will AJ and Callie finally call it quits? What significance will Diamond have in Stef? What repercussions will Lena experience over her sex-ed class?

Find out when "The Fosters" season 4 episode 17 airs over Freeform next Tuesday night, March 21, at 8/7 C.