Her boyfriend. You go to the next walkway, behind the bushes

"Who is it?" Megan quietly asks you and answers herself: "My boyfriend, Dave."

You put finger to your lips and quietly go to the next walkpath. When you hide behind bushes Megan calls:

"Dave, I'm here!"

You look cautiously through the bushes as your friend Dave approaches Megan, they hug and kiss. After watching them a little you quietly leave.