Comment by nemo44x

Everyone is different but it's not uncommon for a person who commits suicide to appear to be happy and normal in advance of it. There's a variety of reasons for this such as they've made up their mind and are finally at peace, or that they cover it up because they don't want anyone to interfere, etc. Some people are manic and have super highs and crushing, sudden lows and they kill themselves when they crash.

Not saying this is the case here, but him being in great spirits doesn't really contradict the action of killing yourself.