Birthday present

My wife and I are in our late 50’s. In good shape and look young for our age. We went to Santa Barbara for long weekend. Celebrating her birthday. We had some good sex after we checked in. We were laying in bed and I joked around with her and told I was going to get the fucking she’s always dreamed of tonight. We had talked about a threesome while having sex sometimes and it did turn us both on. But she said she would never do it. After dinner, we went to small bar for a few drinks. There was a young man that caught her eye. He was about thirty, just over six feet tall with a solid lean build. We were shooting darts. When he came over and asked to play. I explained that she was a beginner. And he said no problem he would coach her while she played against me. If we didn’t mind. My wife looked at me and I said it’s not everyday you get your own coach. So we proceeded to play. And he was very patient and charming with her. At times he would stand closely behind her and show her how throw the darts. She seems to be loving the attention. The bar was closing soon. And she wanted a few more drinks. I said we have beer and wine back at the hotel. And she invited him to follow us if I didn’t mind. Inside I was surprised at the invitation. But not surprised at her being friendly. We get to the room and have a few drinks. I could tell our guest Mike liked what he saw. My wife has a few extra pounds, but she has all the curves a real woman should have. She is a beautiful woman and her outgoing personality makes her even sexier. She went to the bathroom which was in the bedroom portion of our suite. After a few minutes, she called me. I met her in the bedroom and she looked me deep in the eyes and kissed me. And she asked was this the birthday present I had promised earlier. I told her I would never plan something like that without her knowing and consent. And then said to me. I consent. She walked into the living room and poured us a shot of tequila. Then she handed one to Mike. And sat on his lap and we did our shot. Before he could put his glass down. She was deep kissing him. She then straddles him and opens his shirt. I came up behind her and started rubbing her back. Then opening her blouse. Then unfastened her bra. She has nice 38dd with brown nipples and perky for her age. Mike buries his face in them. While she grinding on his crotch. She takes him by the hand and says it’s my birthday. And she leads him to the bedroom. Where they made out some more. He lays her on the bed with her legs hanging over the side. And starts working his way to her crotch. Slips her panties to the side and start licking her. After a few minutes she takes them off completely. And he ate to her first orgasm. He stands up and she starts kissing his chest and belly while loosening his belt. He was shaven with a thick eight inch cut cock. I was turned on seeing my beloved being a total slut for another man. She is sucking and licking his cock. And she really into it. Mike finishes undressing. And she reminds him it’s her birthday. She tells him give me that cock. And he does. For the next twenty or thirty minutes Mike proceeds to fuck my wife. And she is telling him to fuck jet harder. She wrapped her legs around him as he cums deep inside her. He then rolls over onto the bed and she gets up to kiss and thank me for the present. I was hard having just watch my wife seduce this young man. And have her way with him. She takes off my clothes and say I want to fuck both of you now. The next hour was filled with my wife fucking and sucking us both. When we were laying there catching our breath and rehydrating. Mike said he had to leave. She asked if had one more load for her. And he did. My wife pussy was dripping with a few loads of cum. And she was looking ever so vibrant. We never talked about it after. But she did say what are you going to do for my next birthday?