Here is my interpretation of these 3 scenes.
1st picture: He is a wannabe boyfriend. She has her guard up (closed hands in front) and trying not to get too close. He has the tired hat-on-backward, trying-to-look-younger-than-he-is look. Definitely not a player. She is probably hoping for a phone call from one of her friends so she can make her escape.
2nd picture: These are probably just two friends sharing a umbrella. Outside chance they are two women. Definitely not hetero with romantic intentions.
3rd picture: These two are comfortable with each other. Have explored each other recently. Haven't been together a long time, but just long enough to want more.
I agree on the first one, he wants more than she does. But they still look cute together! I think the couple under the umbrella is an actual couple because they were strolling separate from the group of other Japanese(?) tourists, clearly wanting some time for themselves. The third one is definitely a couple dating for a while, they were hugging each other while waiting for the rain to stop.