During the recent warm spell here in the UK, my husband and I had our first solo rock climb in the Derbyshire hills. Once we'd completed our climb and both looked out over the beautiful countryside, our instructor joined us. So happy with our climb and the gorgeous day, plus the fact my husband knew I liked the instructor, he asked me if i'd thank him properly. Sinking down to my knees, I took out the instructors cock and sucked him off. At no point did he say stop, and no point did my husband want me to stop. Once he'd cum in my mouth and I'd swallowed his wad, I stood up, wiped my mouth and said thank you to them both. Back at the car park, I got into our car with my husband sitting in the driving seat. He grinned at me, but I knew there was something not quite right. Asking him if everything was ok, he said "When I said thank him properly, I meant give him a kiss, not go down on him and suck him off". I'd gotten his intentions all wrong, but I asked him why he hadn't stopped me. My husband replied "Because you looked some damn horny sucking his dick". We're going on a weeks hiking/climbing break soon. I've asked my husband if he'll want me to thank the guide we've hired. He didn't say no, what he did say was "Only if he's got a big cock". Now I can't wait.