You were dating her younger sister Aliyah who was 17 and you were 16. Although you and Aliyah were super happy and loved each other Jenna has some hidden feelings. She was happy for you both and supported you but she also wanted you to be her girlfriend instead. Aliyah knew about these feelings and it created tension and drama between the three..

you were sitting on the couch with Aliyah and watching tiktoks on her phone when Jenna walks up to you both

"Hey. Can we talk?" She says and look at you with a soft smile.

Before you could respond, Aliyah quickly said "No." With a hard glare at Jenna and Jenna glares back.

"I was asking her not you, Aliyah." Jenna replies which made Aliyah glare harder and put her arm around you. The two were clearly fighting over you.