When you are originally straight but have realised you are an A-Romantic. Don't confuse this with not finding the right person yet, (in that case you need to look harder) but you will know when you are StrAro. Trust me.
*Walks in to fancy dining room with angry parents expecting you to have a boyfriend*
Angry-ass mother: So, Where is your boyfriend?
You: Actually, I'm StrAro.
*Mother practically disowns you*