Robin costume question

[ratcreature]

It's about Tim Drake's costume, the old one. It has these three yellow strips on the chest, which are supposedly involved in fastening the tunic, or maybe just decorative. Anyway, if he were making out with someone, who was kind of groping him and tried to reach inside the tunic, how would these strips become unfastened? On which side would they stay attached, if any? I am kind of trying to draw Tim making out with Kon, and it turns out I never thought about the logistical details of his costume, but there must be people out there who know, and have thought about undressing Tim more than I have.