Congrats on a very good question. Many don't know that for a time Corinth was seriously spiritual to the extent that people weren't getting married and married people were failing to maintain biblical standards in their relationships such as, sex.
When Paul wrote it is good not to touch a woman it is to be taken along side his desire to serve the Lord without the distraction of a wife. Paul, however, is not stupid. He knows full well that the vast majority of people are not cut out for such a life and that for most of us God intends marriage and all that comes with marriage.
This Scripture has nothing and I mean nothing to do with sexual immorality. Now back in bible days much of your list would have been culturally off limits. Affection was shown in other ways during the betrothal year. Today a kiss, hug, holding hands and such is not considered sexually off limit by any but the most hardline of clergy. Spooning on the other hand is definately risky. Such close, prolonged, intimate contact has its own risks to be factored in. Now many today consider spooning just another form if cuddling. Indeed it is but I personally would not use that particular form of cuddling till after your engaged at minimum, preferably after marriage so that if things go beyond the cuddling point you will not be sinning.
Still, your an adult and no one can tell you what to do or not to do. You know your strengths and weaknesses. You know your own level of working faith. Trust in it and in God to keep you from being compromised. It you feel that your self-control is weakening then I would recommend you follow the example of Joseph (son of Jacob) and flee. Not end the relationship but put time and distance between you and the situation.
In Christ,
Bishop SEH