Answer:
Excessive Pride
The downfall of Perseus is his excessive pride. This is the reason why Polydectes is able to trick him into battling Medusa. Excessive pride is a common negative trait in Greek heroes, and it is often known as hubris. From this fact, we can conclude that modesty was a value that the Greeks appreciated highly.
There is a number of words or phrases that you could use to help smooth the transition between sentence 1 and sentence 2, and here are some of them: also, in addition, additionally, furthermore, moreover, on top of that, etc. The meaning of the second sentence adds on top of the first one - so any of these transition words would be a good choice.
Year is going fine hows your year going ?
Relationships of almost any nature have many, complex stages, whether this is between two humans or a wide variety of animals in different settings.