I did pray for a sign from St Therese and received it. I prayed a novena asking for a sign of roses if I should pursue a relationship with a particular guy or not.
Pink roses: Don’t pursue the relationship.
Yellow roses: Go for it.
On the day the guy and I parted ways, I received a pink rose. A couple years or so later, I met another guy in a college class. We would sit next to each other and shared a lot in common. One day he was late to class, but did get to sit next to me because I saved him a seat. I decided, for whatever reason, to tell him the story about St. Therese and my pink rose that day. He started laughing, but wouldn’t tell me what he thought was so funny. Turns out he was late to class because he was busy placing an order at the florist’s for a bouquet of yellow roses for me.
It was definitely nice to receive these signs, but no one should be discouraged if they don’t have a similar experience. If God knows you want to follow His will in choosing a spouse He will certainly help you.