Do I qualify as a cuckold?

My name is john, I am 49, married for 9 years to my wife who is 34 years old. I discovered early on in our marriage that there was a huge difference between what my wife required sexually and what I was able to provide her with, I had frequent erection problems, suffered from premature ejaculation and realised that was unable to meet her sexual demands. After 2 years of marriage, I noticed a change in my wife, she started attending a gym most evenings and little by little she began to change her style of clothes, she began to wear figure hugging skirts and blouses to work, hold up stockings replaced the usual pantyhose, thong style panties and push up bras become the norm, to me it was obvious that she was trying to attract male attention and given my lack of performance in the bedroom, I couldn't blame her. I was working night shifts and she started working late at the office, often I would leave for work before she arrived home, by this time our sex life was non existant and I was masturbating almost constantly as I wondered if she was being unfaithful.

She began attending work parties without me, I did nothing to discourage her, she wore a variety of tight fitting dresses, I could imagine the effect the dresses would have on the male guests, she would arrive home in the early hours of the morning, looking a little the worse for wear, I could only imagine what she had been doing, eventually I found the courage to ask her and she admitted that she had being seeing other men for a number of months, she said she had no regrets and that she had no intention of giving up her newly found sexual pleasures.

It moved on a stage further when she sent me a message on my phone one night, she said she was bringing a man back to the house to stay the night, she told me to wait for her and her male friend to arrive at the house before I left for work that night, I did as I was told and met him, he was a lot younger than I was and after being introduced to him, my wife told me I should leave for work, as I closed the door behind me, I couldn't help but have a quick look behind me, I watched the young man and my wife kissing passionately, it was the most erotic thing I had ever seen, but as I got into my car I saw our bedroom light come on and saw the two of them in front of the bedroom window, the curtains were still partly open and before I drove off I watched the young man and my wife kissing yet again, after a few minutes my wife closed the curtains and I had to leave for work.

Since then she has had an affair with her boss and was being given extra tuition by her gym instructor, I can just imagine how he made her stretch.

Do I qualify as a cuckold?