It's a beautiful wedding day at the Jones farm. April O'Neil and Casey Jones are looking foward to getting married. You are getting the finishing touches on your own make up when leo came in.

Leo: Hey
You; *turns around* hey, Leo.
Leo: you doing okay?
You: I'm fine. It's just that April and Casey are finally getting married. I dunno what we'll do without them.
Leo: *holds your hand* don't worry. April and Casey will be back to visit us. Plus we may video chat with them when they get a chance.

Leo kisses your cheek which made you blush.

Leo: see you outside. *walks away*

Later on, as the wedding proceeds, the foot ninjas and cyber shredder attacks. Leo, raph, donnie, and mikey fight off the foots ninjas while you evacuate everyone to safety. Leo was about to be knocked out by the foot soldier when you push Leo put of the way! In process, you sprain your ankle!

You: ahhhh! My ankle!
Leo: r u okay?
You: I should be asking you the same thing.

Leo carries you to safety as donnie and serling kill cyber shredder once and for all! After that, thankfully one of your friends worked as the doctor/nurse and tended to your sprained ankle while Leo held your hand for comfort/support.

Leo: thank you.
Your friend: it's a good thing I came here in case of injuries.

Later on, the wedding proceeds as Casey and April sealing with a kiss. Everyone applause as Casey and April walk down the aisle. April tosses the bouquet in the air but made a fake throw prompting to give it to Leo (poor girls lol). Leo went to you which made you confused.

You: Leo? What are you....?
Leo: y/n, I'll never forget the moment Casey and April introduced you to me and my brothers. the moment you came into my life, I had been a gentle friend to you despite raph, donnie and mikey teasing me that I had a crush on you which I have now. *Everyone, including raph, donnie, and mikey, laugh* anyways, what I was trying to say is.... *gets the small box ypout, opens it, and reveals the (your birthstone) ring* will you marry me?
You: yes!

Everyone cheers as Leo puts a ring on your finger and kisses you.

Casey: way to go, leo!
April: congratulations,  you two!

Casey and April went on the (pick vehicle) and drove off to their honeymoon.