Everyone is stupid at least once in their lives, usually more often. It's a fact of humanity. That spy will habitually fall victim to his own stupidity, if he hasn't already (which I doubt). Revel in having learned from that experience. Let the pain drive you, if you must, but know you deserve better, that you HAVE better, and continue moving forward. Know that not everyone will betray you this way, and some... well, some would avenge you, should you ask.
“Oi don’t like talking about tha guy but..It feels good. Ta talk about it, Oi mean”