This picture is deep. It's talking about trust

Dude, he let go. That trust is over son.

unlock your own damn foot first, lady?

That's not about trust

If he really wanted her to get out he would have gave her his leg(obviously longer) so she can grab on it and pull herself out.

Her cuff doesn't have a lock, but his does, so maybe her key is for his lock... in which case she should throw it up to him and then hold her breath and until he comes down to get her after he frees himself. Which would mean that she has to trust him enough for that, but since she's not throwing the key, she probably does't, so they're both going to die. Fun.

I can see one would need to be a certain degree of messed up to read some sort of meaning of trust in this rather puzzling image.

Since she is holding the key that locks him to the tree, maybe it's about her not wanting to take him down with her? She knows she will drown, and that he will try to save her, and then probably drow himself, so she saves him in that way?

all I can see is the fact that they need eachother to survive? he needs her to unlock his arm and she needs him to save her from drowning? I dont know

I think it's about how they need each other for survival... He is her salvation, she is his, and it will only work if they help one another