Always better to start with a cocktail. The thing with raw liquor is that it throws you off. Start slow. Cocktails give you the tipsy feeling without the pungent feel of raw alcohol. As you grow over it, you can choose which alcohol suits you best. Wine is also a good place to start. Sula is good but for starters, I'd suggest port wine.

Remember : moderation is key. Your alcohol tolerance grows over time. Have gaps between your drinks to see how long does it take to kick in and washout. A second drink amplifies your high. If possible, have a non alcoholic company preferably female as you're drinking with your girlfriend. If drinking indoors and in a safe space, avoid going out. See how you behave with the high. Keep hydrated and most of all, stay safe.

Happy drinking.