For men who are having relationship problems with their better half, you should understand when you’re with someone you shouldn’t have to jump through hoops trying to convince them of how you feel. If they don’t believe it then I think the issue is more on them then it is on you. If she is basing the direction of your relationship on others and what they’re doing then how will the rest of your marriage (if you were to marry) go? She comes home one day wanting kids because someone at work is pregnant and everyone is fussing over them, or taking trips, doing whatever. Imagine her telling you that in order to convince her you love her then you have to do what everyone else is doing, buy her a bigger diamond then her co-worker, have kids now, jump through a hundred and one hoops. You get my drift.
Sure, others may stick their nose into your relationship but it is your relationship (meaning yours and her). How you want it to be, how you want it to progress is between the two of you. If others can so easily influence her and the direction of your relationship then, well, it could become a nightmare. Best you have a sit down with her and ask her what it is she wants, not what she wants based on what others think, but what she really wants. Then tell her what it is you want and why you want it.
If you can’t compromise, if you don’t get her point of view and she doesn’t get yours then you may want to rethink the relationship if you’re not moving in the same direction. A relationship should be based on a united front, two people working towards the same things, not always wanting the same things but helping each other achieve goals, offering support etc. etc. not acting/reacting based on what others are doing.