there are many books on dating advices for over 40. i personally choose to be myself and make the other smile. it works at every age. in addiction,you can check online some pubs for over 40 couples and go there so you can feel more comfortable.
Age is an important factor in marriage. You must have to consider my suggestion. This factor is not considerable, where you both love eachother. Here you have you to ask yourself, whether you both in a good relation.