When you watch Switched at Birth Season 4 Episode 18 online you'll see how important it is to keep a secret. When Bay is ready to take things further with Garrett, she plans a night of movie watching at his apartment. Things start to heat up between the two of them, but Garrett assures Bay he's safe and gets tested for STDs every month, but Bay is quickly overwhelmed by Garrett's experience and makes up an excuse to leave. Garrett is understandably confused and goes to Travis for answers and Travis tells Garrett about what happened between Bay and Tank. Garrett apologizes to Bay and lets her know what Travis told him and he puts the breaks on their relationship. Bay furiously goes to Travis and tells him he had no right to tell Garrett about Tank and Travis tries to apologize, but Bay doesn't want to hear it. Eventually, Bay talks with Garrett about what happened to her and she assures him the reason she left his apartment had nothing to do with her past, but more to do with his experience. Garrett understands and they agree to continue their relationship, but they decide to move a little slower. Don't feel bad if you missed out! You can watch Switched at Birth online anytime via TV Fanatic.