Imo, needing to coerce, persuade or convince anyone, male or female to partake in any form of sexual acts they have no interest or desire to do is never a good idea. Most girls I know are either a little bi curious or are completely not into the idea of being with another female. Everyone has fantasies and it’s completely normal to share yours with the person you are in a relationship with but you should also respect their boundaries. Another thing to keep in mind beyond having some fun and checking something off your bucket list is, how this might affect your relationship. Ime, in order for this scenario to play out successfully, your relationship needs to be built on mutual trust, love, respect and in addition to all of those components; it is crucial for you both to create the space and have the freedom to communicate in an open and honest way without fear or judgement from one another.
When we first got married I shared with my husband how I was a little bi curious and had fantasies about being with girls. But it was just an idea and a fun teasing conversation for a long time because we actually didn’t venture down this path until after being married for at least 12 years. We started out by going to strip clubs as a trial run to see if I would enjoy it or have any jealousy issues. Then we moved into tantric massages which involved two girls giving us massages as we layed next to each other while they teased us with oiled body glides and it ended with a “happy ending” for the both of us (there was no oral or intercourse involved). Then we slowly incorporated p4p with some boundaries for a couple of years and now after 18 years of marriage, we spice it up by occasionally partaking in some p4p without any boundaries except us being together during the play. So, there was definitely no need to do much “convincing” on me from the very beginning. If this is something you would like to create in your future relationships, I suggest you be upfront and honest about your desires early on. Another thing worth mentioning is, our mindset in doing p4p is to add an exciting element to our marriage and it’s not because we are seeking something out to fulfill anything that might be missing within our relationship. Good luck!