It is very common to experience high sensitivity and rapid ejaculation after a phimosis operation. The newly exposed skin on the glans is highly sensitive but will naturally desensitise over a few weeks to months as it adjusts. To manage this, you can use topical anaesthetic creams or sprays containing lidocaine or prilocaine to temporarily reduce sensitivity before intercourse (ensure you wash it off or use a condom so your partner isn't affected). Additionally, oral medications like selective serotonin reuptake inhibitors (SSRIs), such as dapoxetine, can help delay ejaculation. Please consult your urologist to discuss the best, safest option for your recovery.