on the topic of my last rb I will always be a firm believer of Lucas being Will's first crush
it obviously never goes further than your average 5 year old's crush but it's there. Mike doesn't understand it beyond knowing that Will is suddenly paying a LOT of attention to the new kid and is very jealous about this.
Eventually Will grows out of it and obviously begins crushing(and later falls in love with Mike)
years down the line the party is playing a truth or dare style drinking game and it goes something like:
Dustin- Who was your first crush?
Max- Come on! It was obviously Mike!
Will- Well...
and the party loses their MINDS
after that I like to imagine that Lucas starts threatening to still Will whenever him and Mike get into disagreements