At times, think that we are ascribing attibutes to Jack or Ennis that would be foreign to their limited areas of experience. Keep telling myself, keep it simple, because that is the type of life they lead, though Jack's expanded as the years passed. Jack loves Ennis, Jack wants to be with Ennis, Jack feels he is rejected. Jack goes away from Ennis to Mexico. This is where I would say that Jack was not looking for sex - know that in my own experience after being rejected, sex is the last thing on my mind. Given some time to reflect, yes Jack could have gone with the sole purpose of finding a sexual partner. Don't think he left Ennis with the thought - Ennis doesn't want me, so I'm gonna go to Mexico to f..k another guy. Realistically he could have found someone much closer, and still not be close to either Ennis or Lureen.