Hello, I bought 3 (or 3 and a half) years ago a durex play lube and have been using it sometimes with my girlfriend since then. I didn t know it was supposed to be used within 3 months from first opening. We even used it after its expiration date which was approximately one year ago. I also applied it directly on my penis sometimes when I was masturbating. We haven t noticed any skin infection or irritatgion. What could happen to us?