The pair endured some tough times but have now made history together as Liverpool's first ever Premier League winners.
Lallana told LFCTV: “I haven't been with Jordan throughout the whole journey. I've been alongside him when he's had his down moments…
“He's had a couple of injuries and he's been alongside me and my dark moments, injuries. It's not just defeats these dark moments.
“That'll be a constant battle for Premier League footballers throughout footballing careers because you're just looking for answers – try harder, do this, do that. There is nothing that will guarantee fitness, you've just got to keep working and doing your job.
“There was one morning – because we used to drive in a lot [together] me and Jordan – and we drew 3-3 to Sevilla. It felt like a defeat and I remember Jordan… he had his hood up and just hearing him say 'as captain that can't happen, I've got to be responsible for that.'
“Just to hear how honest he was but thinking 'are you crazy to be taking that responsibility? It's the team's responsibility, we've not even lost the game.'
“That just epitomises his selflessness and how much responsibility he takes for Liverpool Football Club in the BAD moments, that's not the good moments.
“That's why he deserves this more than anyone else. He deserves to be the captain of Liverpool holding the four trophies in one season more than anyone else and no one can take that away from him ever.
“Being not just his friend but his teammate, nothing makes me happier."