Here's something else you can do and I know it works very powerfully!

Simply state in the positive that which you wish to manifest e.g
I am in a wonderful loving relationship with ...... and it feels so good, he loves me so much and I love the feel of his arms around me etc.  (add in as much detail as you can to the affirmation and 'feel' it), keep adding more affirmations that feel real to you and emphasise the positive aspects about you/him/her and the relationship you have with them.

Go on a feeling rampage whilst making positive affirmations and with your eyes open, maybe get a visual glimpse of you and your loved one happy and enjoying happy times together.  Spend 15 mins or so doing this, write it down if you like as well.  But importantly is to get into the good feeling place of what you are stating to be true.

It's a nice alternative to visualisation especially if you only have 5-10 minutes and you don't feel you can relax enough to meditate.  Enjoy!