IndianCuckold said:
After a couple of hours, Nisha and I fucked. We lay in bed and she whispered, “I am still horny.” I had no idea what to say or do. Then I uttered. “There is that young pizza guy.” She lay still. Then she said. “So?” I whispered, “Why don’t you wear something sexy and order pizza and see what happens?
If you fucked your sexy wife a couple of hours after you had brought yourself to ejaculation by masturbating, that suggests you were probably able to last for a significant time while fucking her. Afterwards, if she said she was "still horny," that suggests she probably did not attain orgasm while you fucked her.
If so, that would not have been an unusual outcome. Many women find they can't attain orgasm from penetrative sex with their husband or regular partner.
Or, if your wife did attain orgasm while you were fucking her, that implies she is probably multi-orgasmic.
In either case, I strongly suggest making it a point to bring your wife to orgasm at least once BEFORE you penetrate her. There are at least two ways of doing this. One is to engage in suitably-extended foreplay, consisting of kissing her cheeks and neck, then tongue-kissing her while gently fondling her tits, ass and thighs, then working your way down and kissing and licking her tits and nipples, then gently fondling her pussy, especially her clitoris, with your lubricated fingers, then masturbate her clitoris with your fingers until she orgasms (while continuing to kiss her). If you aren't sure how to most-effectively masturbate your wife to orgasm, ask her and she will show you.
Another way is to begin in much the same way, but after sensuously kissing her tits and sucking her gorgeous big nipples, continue downward, kissing and licking her belly, then move down to her thighs, kissing and licking her thighs as you work up toward her pussy. Then, sensuously give your wife cunninlingus with your tongue until you bring her to orgasm. And, if she says "don't stop," continue sensuously giving her cunninlingus until she tells you she wants you to fuck her. If she does not attain another orgasm while you are fucking her, after you ejaculate ask her if she would like you to again "go down" on her. (It seems possible you and your wife may find your tongue is a more effective instrument for sexually satisfying her than your penis.)
If you're uncertain about how to effectively give your wife cunnilingus, enter "how to perform cunnilingus" (without quotes) in your preferred search engine. You will find there are quite a few instructional sites on this subject.
I suggest the above because just becoming erect then poking your penis into your wife may be the least effective way of bringing her sexual satisfaction — and, because you haven't mentioned any of the above in your posts.