You need to look at the entire chart for that.
And generally speaking it's impossible to know for sure how a person is based only on their chart, because their level of maturity has to be taken into account and we can't see that looking at a chart.If Uranus is connected to the Moon, Venus, 5H or 7H, you could have a more complex scenario.
Saturn can be very hesitant to get involved with someone because he takes this stuff very seriously. So even Saturn-influenced people can be commitment-phobes (fear of beig let down/hurt for example, or fear of responsibility).
Pay attention to their words and actions, haha.
ETA: Oh they have Venus retro... okay that explains the hesitation. You should read about it. It doesn't *have* to play out as a fear of commitment but the matters of the heart (Venus) are usually quite complicated with those people.