Spurs is the only team I support but I sometimes keep an eye out for Ajax and Fener results.
On my 23rd birthday me and the boys went Amsterdam and they surprised me with tickets to Ajax vs PSV (Ajax won 3-1), was an incredible experience and due to their Jewish heritage like Spurs, I've looked out for their results at sporadic times.
One of my best mates is a Spurs and Fener fan, he's the leader of a section of Fener's GFB. He took me to their pre-season match against Sheff Utd a few years back, was absolutely mental and the way they supported their club was tremendous. I've been to their social club in Dalston a few times as well, they've given me front row seats to watch games against Besiktas and Gaziantepspor in the past, as a thank you I was able to get my mate and 5 of them tickets to Spurs vs Besiktas a couple of years back. There's now a sort of mutual respect between my mates and the GFB boys, whenever we all meet up it's a great laugh, the Turkish lads (most of which are English-born) sing Spurs stuff and we do our very best (which is terrible) to try and sing Fener ones