Awww, that sounds positively adorable. In my opinion, you should go for it. Good luck.
Most young men propose to their girlfriend alone; be some young men may prefer to ask the woman he loves to marry him in front of friends (perhaps at a party) or setting up a party to propose to her and then celebrate. Generally the most popular is for a young man to take his girlfriend to a nice restaurant and propose to her or other places that are romantic.
No one can determine what is "romantic" for you and your girlfriend, plus where you go depends on your budget and how much time you have. This site offers suggestions in all 50 states: www.allgetaways.com/activity.asp?areaid=100436
You have to be a teenager at least: 1) click on her 2) press anything under "romantic" 3) do this until she grabs interest and flirts with you 4) you will become romantic interests 5) continue being romantic 6) press romantic after flirting for a while. see if there is an option that says "propose" (this is NOT marriage! it means to ask if she wants to be her girlfriend)
You don't u propose to her
There are many romantic ways to propose. Some people propose in a fancy restaurant, a national sporting event, special holidays and anniversaries and just spur of the moment.
ask her where she likes in dublin, then take her on a romantic trip there and ask her. St Stephens Green park in the centre of the city on a sunny day I would recommend.
No
A candlelight dinner.
Go get a new tux, take her to get a new dress that she picks out (shell suspect somethings up but she wont know what), take her out for a romantic dinner, and propose!
You first have to get the two Sims to talk to each other. Then, you have to click on the other Sim and click "Romantic" and then click "Flirt". Once the are flirting just keep clicking "Romantic" and select the other options until you see "Confess Feelings" (or something like that). This will make the other Sim your "Romantic Interest". Keep being romantic with that Sim until you see the option under "Romantic" called "Propose Going Steady". Click that and your Sims will become boyfriend and girlfriend! *Note* Your Sim must be a teenager or older to become boyfriend or girlfriend with someone.
If you get two sims relationship levels up to 100, then you go on romantic and there should be a option saying propose. If the person accepts then you are coupled. Ps. You can't propose to someone that is already coupled with someone, well you can, but they won't accept.
you need to keep using a lot of romantic interactions. eventually you will have the option to propose to your sim.