1. Your 5th Lord Saturn is with 11th lord Moon (according to Vedic we call it Punarfu yog) but there is exchange of aspect with 7th and 4th Lord Jupiter. Means disturbance in your marriage or married life but will be done positively.
2. Its not necessary that some one will create issue, but because of situations you may face hurdles. Not only for your marriage, but in your happiness also, education etc.
4. But where ever you will find hurdle, I am sure possibility of success in that will be more. Because your Saturn is 6th Lord too, and will give you strength to fight back, or focus, determination in the concern area or matter.
5. Rahu in 5th house will give you more focus (positive or negative impacts), depending on dashas. But for Love and marriage I will consider Rahu as favorable.
6 Currently you are passing through last phase of Mars Mahadasha, from Aug. 22nd you will enter in Rahu Mahadasha, will give you different thoughts, different ideas etc.