This will probs be quite difficult because my true love, as previously stated, is books. But I'll give it a go.

1. Thomas Brodie-Sangster
Hmm
Oh! Some fictional characters are famous! Ok let's go
2. Leo Valdez McSchizzle
3. I am still struggling with this
Hold on
Brain is thinking
Newt (not Scamander, the other one)

(Looking back, I have now come to the conclusion that I am aro ace {aromantic asexual} which means I do not experience romantic attraction. So the aforementioned "crushes" werent actually crushes because I do not understand human emotions)